diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/Char.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/Char.java
index f9b7632fb..42ff725a4 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/Char.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/Char.java
@@ -127,7 +127,7 @@ public abstract class Char extends Actor {
 			
 			// FIXME
 			int dr = this instanceof Hero && ((Hero)this).rangedWeapon != null && ((Hero)this).subClass ==
-				HeroSubClass.SNIPER ? 0 : Random.IntRange( 0, enemy.dr() );
+				HeroSubClass.SNIPER ? 0 : enemy.drRoll();
 			
 			int dmg = damageRoll();
 			int effectiveDamage = Math.max( dmg - dr, 0 );
@@ -210,7 +210,7 @@ public abstract class Char extends Actor {
 		return Messages.get(this, "def_verb");
 	}
 	
-	public int dr() {
+	public int drRoll() {
 		return 0;
 	}
 	
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/buffs/Combo.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/buffs/Combo.java
index 9a19840c5..946994537 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/buffs/Combo.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/buffs/Combo.java
@@ -221,7 +221,7 @@ public class Combo extends Buff implements ActionIndicator.Action {
 					break;
 			}
 
-			dmg -= Random.IntRange( 0, enemy.dr() );
+			dmg -= enemy.drRoll();
 			dmg = target.attackProc(enemy, dmg);
 			dmg = enemy.defenseProc(target, dmg);
 			enemy.damage( dmg, this );
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/hero/Hero.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/hero/Hero.java
index 939a497f3..f389853ad 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/hero/Hero.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/hero/Hero.java
@@ -298,11 +298,17 @@ public class Hero extends Char {
 	}
 	
 	@Override
-	public int dr() {
+	public int drRoll() {
 		int dr = 0;
 		Barkskin bark = buff(Barkskin.class);
 
-		if (belongings.armor != null)   dr += Math.max( belongings.armor.DR(), 0);
+		if (belongings.armor != null) {
+			dr += Random.NormalIntRange( belongings.armor.DRMin(), belongings.armor.DRMax());
+			if (STR() < belongings.armor.STRReq()){
+				dr -= 2*(belongings.armor.STRReq() - STR());
+				dr = Math.max(dr, 0);
+			}
+		}
 		if (belongings.weapon != null)  dr += Math.max( belongings.weapon.defenceFactor( this ), 0 );
 		if (bark != null)               dr += bark.level();
 
@@ -368,13 +374,9 @@ public class Hero extends Char {
 		}
 	}
 
-	public boolean encumbered(){
-		return (belongings.weapon != null
-				&& belongings.weapon instanceof Weapon
-				&& STR() < ((Weapon)belongings.weapon).STRReq())
-				||
-				(belongings.armor != null
-				&& STR() < belongings.armor.STRReq());
+	public boolean canSurpriseAttack(){
+		return !(belongings.weapon != null && belongings.weapon instanceof Weapon
+				&& STR() < ((Weapon)belongings.weapon).STRReq());
 	}
 
 	public boolean canAttack(Char enemy){
@@ -942,7 +944,7 @@ public class Hero extends Char {
 		//TODO improve this when I have proper damage source logic
 		if (belongings.armor != null && belongings.armor.hasGlyph(AntiMagic.class)
 				&& RingOfElements.FULL.contains(src.getClass())){
-			dmg -= Random.IntRange(0, belongings.armor.DR()/2);
+			dmg -= Random.NormalIntRange(belongings.armor.DRMin(), belongings.armor.DRMax())/2;
 		}
 
 		super.damage( dmg, src );
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Bat.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Bat.java
index 7cb5d849c..bd5c122ec 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Bat.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Bat.java
@@ -51,7 +51,7 @@ public class Bat extends Mob {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 6, 12 );
+		return Random.NormalIntRange( 8, 15 );
 	}
 	
 	@Override
@@ -60,8 +60,8 @@ public class Bat extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 4;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 4);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Brute.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Brute.java
index 51d5e0ae8..abb96ccf3 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Brute.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Brute.java
@@ -59,8 +59,8 @@ public class Brute extends Mob {
 	@Override
 	public int damageRoll() {
 		return enraged ?
-			Random.NormalIntRange( 10, 40 ) :
-			Random.NormalIntRange( 8, 18 );
+			Random.NormalIntRange( 20, 40 ) :
+			Random.NormalIntRange( 10, 20 );
 	}
 	
 	@Override
@@ -69,8 +69,8 @@ public class Brute extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 8;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 8);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Crab.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Crab.java
index 32b4f039c..0677e1f58 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Crab.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Crab.java
@@ -52,7 +52,7 @@ public class Crab extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 4;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 4);
 	}
 }
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/DM300.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/DM300.java
index e169ebd70..600b02111 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/DM300.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/DM300.java
@@ -70,7 +70,7 @@ public class DM300 extends Mob {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 18, 24 );
+		return Random.NormalIntRange( 20, 25 );
 	}
 	
 	@Override
@@ -79,8 +79,8 @@ public class DM300 extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 10;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 10);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Elemental.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Elemental.java
index 7ccfeceb5..e7eeeb434 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Elemental.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Elemental.java
@@ -56,7 +56,7 @@ public class Elemental extends Mob {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 16, 20 );
+		return Random.NormalIntRange( 18, 24 );
 	}
 	
 	@Override
@@ -65,8 +65,8 @@ public class Elemental extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 5;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 5);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Eye.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Eye.java
index 401c660f4..b7cab341f 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Eye.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Eye.java
@@ -61,8 +61,8 @@ public class Eye extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 10;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 10);
 	}
 	
 	private Ballistica beam;
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/FetidRat.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/FetidRat.java
index 741d1d91f..2663f68f1 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/FetidRat.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/FetidRat.java
@@ -54,8 +54,8 @@ public class FetidRat extends Rat {
 	}
 
 	@Override
-	public int dr() {
-		return 2;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 2);
 	}
 
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Gnoll.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Gnoll.java
index 7397e7862..29c97f311 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Gnoll.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Gnoll.java
@@ -51,7 +51,7 @@ public class Gnoll extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 2;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 2);
 	}
 }
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Golem.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Golem.java
index e0ab3d086..e89ed078f 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Golem.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Golem.java
@@ -44,7 +44,7 @@ public class Golem extends Mob {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 20, 40 );
+		return Random.NormalIntRange( 25, 40 );
 	}
 	
 	@Override
@@ -58,8 +58,8 @@ public class Golem extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 12;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 12);
 	}
 
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Goo.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Goo.java
index 286715ca4..4d5e4bc08 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Goo.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Goo.java
@@ -100,8 +100,8 @@ public class Goo extends Mob {
 	}
 
 	@Override
-	public int dr() {
-		return 2;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 2);
 	}
 
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Guard.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Guard.java
index c0aa98061..e7c82786f 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Guard.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Guard.java
@@ -59,7 +59,7 @@ public class Guard extends Mob {
 
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange(4, 10);
+		return Random.NormalIntRange(5, 10);
 	}
 
 	@Override
@@ -130,8 +130,8 @@ public class Guard extends Mob {
 	}
 
 	@Override
-	public int dr() {
-		return 9;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 8);
 	}
 
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/King.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/King.java
index 438cfd3e6..3687dc69e 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/King.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/King.java
@@ -89,7 +89,7 @@ public class King extends Mob {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 20, 38 );
+		return Random.NormalIntRange( 25, 40 );
 	}
 	
 	@Override
@@ -98,8 +98,8 @@ public class King extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 14;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 14);
 	}
 	
 	@Override
@@ -283,7 +283,7 @@ public class King extends Mob {
 		
 		@Override
 		public int damageRoll() {
-			return Random.NormalIntRange( 12, 16 );
+			return Random.NormalIntRange( 16, 20 );
 		}
 		
 		@Override
@@ -318,8 +318,8 @@ public class King extends Mob {
 		}
 		
 		@Override
-		public int dr() {
-			return 5;
+		public int drRoll() {
+			return Random.NormalIntRange(0, 5);
 		}
 
 		private static final HashSet<Class<?>> IMMUNITIES = new HashSet<>();
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Mob.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Mob.java
index 100b2340a..ec4620904 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Mob.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Mob.java
@@ -339,7 +339,7 @@ public abstract class Mob extends Char {
 	
 	@Override
 	public int defenseSkill( Char enemy ) {
-		boolean seen = enemySeen || (enemy == Dungeon.hero && Dungeon.hero.encumbered());
+		boolean seen = enemySeen || (enemy == Dungeon.hero && !Dungeon.hero.canSurpriseAttack());
 		if (seen && paralysed == 0) {
 			int defenseSkill = this.defenseSkill;
 			int penalty = RingOfAccuracy.getBonus(enemy, RingOfAccuracy.Accuracy.class);
@@ -353,7 +353,7 @@ public abstract class Mob extends Char {
 	
 	@Override
 	public int defenseProc( Char enemy, int damage ) {
-		if (!enemySeen && enemy == Dungeon.hero && !Dungeon.hero.encumbered()) {
+		if (!enemySeen && enemy == Dungeon.hero && Dungeon.hero.canSurpriseAttack()) {
 			if (((Hero)enemy).subClass == HeroSubClass.ASSASSIN) {
 				damage *= 1.25f;
 				Wound.hit(this);
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Monk.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Monk.java
index aa96864cb..56476c115 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Monk.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Monk.java
@@ -56,7 +56,7 @@ public class Monk extends Mob {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 12, 16 );
+		return Random.NormalIntRange( 16, 20 );
 	}
 	
 	@Override
@@ -70,8 +70,8 @@ public class Monk extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 2;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 2);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/NewbornElemental.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/NewbornElemental.java
index ce9c64183..41810a39d 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/NewbornElemental.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/NewbornElemental.java
@@ -26,6 +26,7 @@ import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Chill;
 import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Frost;
 import com.shatteredpixel.shatteredpixeldungeon.items.quest.Embers;
 import com.shatteredpixel.shatteredpixeldungeon.sprites.NewbornElementalSprite;
+import com.watabou.utils.Random;
 
 public class NewbornElemental extends Elemental {
 
@@ -44,8 +45,8 @@ public class NewbornElemental extends Elemental {
 
 	@Override
 	public int damageRoll() {
-		return super.damageRoll()/2;
-	} //8-10
+		return Random.NormalIntRange(10, 15);
+	}
 
 	@Override
 	public void add(Buff buff) {
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Piranha.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Piranha.java
index 6c9cefbaf..3f9fd4f7a 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Piranha.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Piranha.java
@@ -91,8 +91,8 @@ public class Piranha extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return Dungeon.depth;
+	public int drRoll() {
+		return Random.NormalIntRange(0, Dungeon.depth);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Rat.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Rat.java
index 3b5505eee..61d8051cb 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Rat.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Rat.java
@@ -46,7 +46,7 @@ public class Rat extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 1;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 1);
 	}
 }
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotHeart.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotHeart.java
index 45ff9799d..75b693a8a 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotHeart.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotHeart.java
@@ -29,6 +29,7 @@ import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Terror;
 import com.shatteredpixel.shatteredpixeldungeon.plants.Rotberry;
 import com.shatteredpixel.shatteredpixeldungeon.scenes.GameScene;
 import com.shatteredpixel.shatteredpixeldungeon.sprites.RotHeartSprite;
+import com.watabou.utils.Random;
 
 import java.util.HashSet;
 
@@ -103,8 +104,8 @@ public class RotHeart extends Mob {
 	}
 
 	@Override
-	public int dr() {
-		return 5;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 5);
 	}
 
 	private static final HashSet<Class<?>> IMMUNITIES = new HashSet<>();
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotLasher.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotLasher.java
index 0ffe40974..5f9742b41 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotLasher.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotLasher.java
@@ -86,7 +86,7 @@ public class RotLasher extends Mob {
 
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange(4, 12);
+		return Random.NormalIntRange(6, 12);
 	}
 
 	@Override
@@ -95,8 +95,8 @@ public class RotLasher extends Mob {
 	}
 
 	@Override
-	public int dr() {
-		return 8;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 8);
 	}
 
 	private static final HashSet<Class<?>> IMMUNITIES = new HashSet<>();
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Scorpio.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Scorpio.java
index 66a8b6faf..c4489cd1b 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Scorpio.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Scorpio.java
@@ -57,7 +57,7 @@ public class Scorpio extends Mob {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 20, 32 );
+		return Random.NormalIntRange( 26, 36 );
 	}
 	
 	@Override
@@ -66,8 +66,8 @@ public class Scorpio extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 16;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 16);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Senior.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Senior.java
index 7e9d47e18..34ccdc456 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Senior.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Senior.java
@@ -35,7 +35,7 @@ public class Senior extends Monk {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 12, 20 );
+		return Random.NormalIntRange( 16, 24 );
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Shaman.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Shaman.java
index e0054c40c..e222dce92 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Shaman.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Shaman.java
@@ -56,7 +56,7 @@ public class Shaman extends Mob implements Callback {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 2, 6 );
+		return Random.NormalIntRange( 4, 6 );
 	}
 	
 	@Override
@@ -65,8 +65,8 @@ public class Shaman extends Mob implements Callback {
 	}
 	
 	@Override
-	public int dr() {
-		return 4;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 4);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Shielded.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Shielded.java
index 0f61a30d0..7953da152 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Shielded.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Shielded.java
@@ -22,6 +22,7 @@ package com.shatteredpixel.shatteredpixeldungeon.actors.mobs;
 
 import com.shatteredpixel.shatteredpixeldungeon.Badges;
 import com.shatteredpixel.shatteredpixeldungeon.sprites.ShieldedSprite;
+import com.watabou.utils.Random;
 
 public class Shielded extends Brute {
 
@@ -32,8 +33,8 @@ public class Shielded extends Brute {
 	}
 	
 	@Override
-	public int dr() {
-		return 10;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 10);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Skeleton.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Skeleton.java
index 91cda7081..ba408752f 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Skeleton.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Skeleton.java
@@ -68,7 +68,7 @@ public class Skeleton extends Mob {
 		for (int i=0; i < Level.NEIGHBOURS8.length; i++) {
 			Char ch = findChar( pos + Level.NEIGHBOURS8[i] );
 			if (ch != null && ch.isAlive()) {
-				int damage = Math.max( 0,  damageRoll() - Random.IntRange( 0, ch.dr() / 2 ) );
+				int damage = Math.max( 0,  damageRoll() - (ch.drRoll() / 2) );
 				ch.damage( damage, this );
 				if (ch == Dungeon.hero && !ch.isAlive()) {
 					heroKilled = true;
@@ -104,8 +104,8 @@ public class Skeleton extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 5;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 5);
 	}
 	
 	private static final HashSet<Class<?>> IMMUNITIES = new HashSet<>();
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Spinner.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Spinner.java
index b10a5e55c..4835f19c4 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Spinner.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Spinner.java
@@ -53,7 +53,7 @@ public class Spinner extends Mob {
 
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange(12, 16);
+		return Random.NormalIntRange(14, 18);
 	}
 
 	@Override
@@ -62,8 +62,8 @@ public class Spinner extends Mob {
 	}
 
 	@Override
-	public int dr() {
-		return 6;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 6);
 	}
 
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Statue.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Statue.java
index 401da8681..4cfab09d1 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Statue.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Statue.java
@@ -107,8 +107,8 @@ public class Statue extends Mob {
 	}
 
 	@Override
-	public int dr() {
-		return Dungeon.depth + weapon.defenceFactor(null);
+	public int drRoll() {
+		return Random.NormalIntRange(0, Dungeon.depth + weapon.defenceFactor(null));
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Succubus.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Succubus.java
index d77a2bd50..bd94a4386 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Succubus.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Succubus.java
@@ -64,7 +64,7 @@ public class Succubus extends Mob {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 15, 25 );
+		return Random.NormalIntRange( 22, 30 );
 	}
 	
 	@Override
@@ -131,8 +131,8 @@ public class Succubus extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 10;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 10);
 	}
 	
 	private static final HashSet<Class<?>> RESISTANCES = new HashSet<>();
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Tengu.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Tengu.java
index b0817555c..ea9d47dd8 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Tengu.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Tengu.java
@@ -76,7 +76,7 @@ public class Tengu extends Mob {
 
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 8, 15 );
+		return Random.NormalIntRange( 10, 16 );
 	}
 	
 	@Override
@@ -85,8 +85,8 @@ public class Tengu extends Mob {
 	}
 	
 	@Override
-	public int dr() {
-		return 5;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 5);
 	}
 
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Thief.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Thief.java
index 26c948352..45cded134 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Thief.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Thief.java
@@ -82,7 +82,7 @@ public class Thief extends Mob {
 
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 1, 7 );
+		return Random.NormalIntRange( 1, 8 );
 	}
 
 	@Override
@@ -117,8 +117,8 @@ public class Thief extends Mob {
 	}
 
 	@Override
-	public int dr() {
-		return 3;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 3);
 	}
 
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Warlock.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Warlock.java
index f64755b6c..0dbc5b124 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Warlock.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Warlock.java
@@ -60,7 +60,7 @@ public class Warlock extends Mob implements Callback {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 12, 20 );
+		return Random.NormalIntRange( 14, 24 );
 	}
 	
 	@Override
@@ -69,8 +69,8 @@ public class Warlock extends Mob implements Callback {
 	}
 	
 	@Override
-	public int dr() {
-		return 8;
+	public int drRoll() {
+		return Random.NormalIntRange(0, 8);
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Wraith.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Wraith.java
index 137ea8eab..b47f761cb 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Wraith.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Wraith.java
@@ -69,7 +69,7 @@ public class Wraith extends Mob {
 	
 	@Override
 	public int damageRoll() {
-		return Random.NormalIntRange( 1, 3 + level );
+		return Random.NormalIntRange( 1 + level/2, 2 + level );
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Yog.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Yog.java
index 33270471d..01e03f1ef 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Yog.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Yog.java
@@ -230,12 +230,12 @@ public class Yog extends Mob {
 		
 		@Override
 		public int damageRoll() {
-			return Random.NormalIntRange( 24, 36 );
+			return Random.NormalIntRange( 30, 40 );
 		}
 		
 		@Override
-		public int dr() {
-			return 15;
+		public int drRoll() {
+			return Random.NormalIntRange(0, 15);
 		}
 		
 		@Override
@@ -316,12 +316,12 @@ public class Yog extends Mob {
 		
 		@Override
 		public int damageRoll() {
-			return Random.NormalIntRange( 20, 32 );
+			return Random.NormalIntRange( 26, 32 );
 		}
 		
 		@Override
-		public int dr() {
-			return 15;
+		public int drRoll() {
+			return Random.NormalIntRange(0, 15);
 		}
 		
 		@Override
@@ -426,12 +426,12 @@ public class Yog extends Mob {
 		
 		@Override
 		public int damageRoll() {
-			return Random.NormalIntRange( 15, 20 );
+			return Random.NormalIntRange( 24, 28 );
 		}
 		
 		@Override
-		public int dr() {
-			return 8;
+		public int drRoll() {
+			return Random.NormalIntRange(0, 8);
 		}
 
 	}
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/items/Bomb.java b/src/com/shatteredpixel/shatteredpixeldungeon/items/Bomb.java
index 545e3cbc1..ca8cb992c 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/items/Bomb.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/items/Bomb.java
@@ -143,7 +143,7 @@ public class Bomb extends Item {
 					int minDamage = c == cell ? Dungeon.depth+5 : 1;
 					int maxDamage = 10 + Dungeon.depth * 2;
 
-					int dmg = Random.NormalIntRange( minDamage, maxDamage ) - Random.Int( ch.dr() );
+					int dmg = Random.NormalIntRange( minDamage, maxDamage ) - ch.drRoll();
 					if (dmg > 0) {
 						ch.damage( dmg, this );
 					}
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/items/armor/Armor.java b/src/com/shatteredpixel/shatteredpixeldungeon/items/armor/Armor.java
index c18a7b95c..449ef8433 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/items/armor/Armor.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/items/armor/Armor.java
@@ -211,13 +211,29 @@ public class Armor extends EquipableItem {
 	public boolean isEquipped( Hero hero ) {
 		return hero.belongings.armor == this;
 	}
-	
-	public int DR(){
+
+	public final int DRMax(){
+		return DRMax(level());
+	}
+
+	public int DRMax(int lvl){
 		int effectiveTier = tier;
 		if (glyph != null) effectiveTier += glyph.tierDRAdjust();
 		effectiveTier = Math.max(0, effectiveTier);
 
-		return effectiveTier * (2 + level());
+		return effectiveTier * (2 + lvl);
+	}
+
+	public final int DRMin(){
+		return DRMin(level());
+	}
+
+	public int DRMin(int lvl){
+		int effectiveTier = tier;
+		if (glyph != null) effectiveTier += glyph.tierDRAdjust();
+		effectiveTier = Math.max(0, effectiveTier);
+
+		return (effectiveTier-1)/2 + lvl;
 	}
 
 	@Override
@@ -267,7 +283,7 @@ public class Armor extends EquipableItem {
 		String info = desc();
 		
 		if (levelKnown) {
-			info += "\n\n" + Messages.get(Armor.class, "curr_absorb", DR(), STRReq());
+			info += "\n\n" + Messages.get(Armor.class, "curr_absorb", DRMin(), DRMax(), STRReq());
 			
 			if (STRReq() > Dungeon.hero.STR()) {
 				info += " " + Messages.get(Armor.class, "too_heavy");
@@ -275,7 +291,7 @@ public class Armor extends EquipableItem {
 				info += " " + Messages.get(Armor.class, "excess_str");
 			}
 		} else {
-			info += "\n\n" + Messages.get(Armor.class, "avg_absorb", typicalDR(), STRReq(0));
+			info += "\n\n" + Messages.get(Armor.class, "avg_absorb", DRMin(0), DRMax(0), STRReq(0));
 
 			if (STRReq(0) > Dungeon.hero.STR()) {
 				info += " " + Messages.get(Armor.class, "probably_too_heavy");
@@ -347,10 +363,6 @@ public class Armor extends EquipableItem {
 		return (8 + effectiveTier * 2) - (int)(Math.sqrt(8 * lvl + 1) - 1)/2;
 	}
 	
-	public int typicalDR() {
-		return tier * 2;
-	}
-	
 	@Override
 	public int price() {
 		int price = 10 * (1 << (tier - 1));
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/items/armor/ClassArmor.java b/src/com/shatteredpixel/shatteredpixeldungeon/items/armor/ClassArmor.java
index f965b1f36..1e921d694 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/items/armor/ClassArmor.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/items/armor/ClassArmor.java
@@ -149,12 +149,21 @@ abstract public class ClassArmor extends Armor {
 	}
 
 	@Override
-	public int DR(){
+	public int DRMax(int lvl){
 		int effectiveTier = armorTier;
 		if (glyph != null) effectiveTier += glyph.tierDRAdjust();
 		effectiveTier = Math.max(0, effectiveTier);
 
-		return effectiveTier * (2 + level());
+		return effectiveTier * (2 + lvl);
+	}
+
+	@Override
+	public int DRMin(int lvl){
+		int effectiveTier = armorTier;
+		if (glyph != null) effectiveTier += glyph.tierDRAdjust();
+		effectiveTier = Math.max(0, effectiveTier);
+
+		return (effectiveTier-1)/2 + lvl;
 	}
 	
 	@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/ChaliceOfBlood.java b/src/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/ChaliceOfBlood.java
index 364a7efb6..eb253c5e8 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/ChaliceOfBlood.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/ChaliceOfBlood.java
@@ -33,7 +33,6 @@ import com.shatteredpixel.shatteredpixeldungeon.utils.GLog;
 import com.shatteredpixel.shatteredpixeldungeon.windows.WndOptions;
 import com.watabou.noosa.audio.Sample;
 import com.watabou.utils.Bundle;
-import com.watabou.utils.Random;
 
 import java.util.ArrayList;
 
@@ -92,7 +91,7 @@ public class ChaliceOfBlood extends Artifact {
 			damage = armor.absorb(damage);
 		}
 
-		damage -= Random.IntRange(0, hero.dr());
+		damage -= hero.drRoll();
 
 		hero.sprite.operate( hero.pos );
 		hero.busy();
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/DriedRose.java b/src/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/DriedRose.java
index 7e276e34c..ed797b0bd 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/DriedRose.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/DriedRose.java
@@ -377,9 +377,9 @@ public class DriedRose extends Artifact {
 		}
 
 		@Override
-		public int dr() {
+		public int drRoll() {
 			//defence is equal to the level of rose.
-			return (HT-10)/3;
+			return Random.NormalIntRange(0, (HT-10)/3);
 		}
 
 		@Override
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/items/weapon/enchantments/Lucky.java b/src/com/shatteredpixel/shatteredpixeldungeon/items/weapon/enchantments/Lucky.java
index 0e0de3ed1..9cc8ddc9d 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/items/weapon/enchantments/Lucky.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/items/weapon/enchantments/Lucky.java
@@ -38,9 +38,9 @@ public class Lucky extends Weapon.Enchantment {
 		if (Random.Int(100) < (50 + level)){
 			int exStr = 0;
 			if (attacker == Dungeon.hero) exStr = Math.max(0, Dungeon.hero.STR() - weapon.STRReq());
-			damage = weapon.imbue.damageFactor(weapon.max()) + exStr - Random.IntRange(0, defender.dr());
+			damage = weapon.imbue.damageFactor(weapon.max()) + exStr - defender.drRoll();
 		} else {
-			damage = weapon.imbue.damageFactor(weapon.min()) - Random.IntRange(0, defender.dr());
+			damage = weapon.imbue.damageFactor(weapon.min()) - defender.drRoll();
 		}
 
 		return Math.max(0, damage);
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/GrippingTrap.java b/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/GrippingTrap.java
index 4f6dd2f19..df26111e7 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/GrippingTrap.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/GrippingTrap.java
@@ -29,7 +29,6 @@ import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Cripple;
 import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Roots;
 import com.shatteredpixel.shatteredpixeldungeon.effects.Wound;
 import com.shatteredpixel.shatteredpixeldungeon.sprites.TrapSprite;
-import com.watabou.utils.Random;
 
 public class GrippingTrap extends Trap {
 
@@ -44,7 +43,7 @@ public class GrippingTrap extends Trap {
 		Char c = Actor.findChar( pos );
 
 		if (c != null) {
-			int damage = Math.max( 0,  (Dungeon.depth) - Random.IntRange( 0, c.dr() / 2 ) );
+			int damage = Math.max( 0,  (Dungeon.depth) - ( c.drRoll() / 2 ) );
 			Buff.affect( c, Bleeding.class ).set( damage );
 			Buff.prolong( c, Cripple.class, 15f);
 			Buff.prolong( c, Roots.class, 5f);
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/RockfallTrap.java b/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/RockfallTrap.java
index 2267707e9..3ab31b369 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/RockfallTrap.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/RockfallTrap.java
@@ -66,7 +66,7 @@ public class RockfallTrap extends Trap {
 
 			if (ch != null){
 				int damage = Random.NormalIntRange(Dungeon.depth, Dungeon.depth*2);
-				damage -= Random.IntRange( 0, ch.dr());
+				damage -= ch.drRoll();
 				ch.damage( Math.max(damage, 0) , this);
 
 				Buff.prolong( ch, Paralysis.class, Paralysis.duration(ch)/2);
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/SpearTrap.java b/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/SpearTrap.java
index 3c0bcdb48..439601b8d 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/SpearTrap.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/levels/traps/SpearTrap.java
@@ -61,7 +61,7 @@ public class SpearTrap extends Trap {
 		Char ch = Actor.findChar( pos);
 		if (ch != null && !ch.flying){
 			int damage = Random.NormalIntRange(Dungeon.depth, Dungeon.depth*2);
-			damage -= Random.IntRange( 0, ch.dr());
+			damage -= ch.drRoll();
 			ch.damage( Math.max(damage, 0) , this);
 			if (!ch.isAlive() && ch == Dungeon.hero){
 				Dungeon.fail( getClass() );
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/messages/items/items.properties b/src/com/shatteredpixel/shatteredpixeldungeon/messages/items/items.properties
index f65ce5806..86b9f3749 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/messages/items/items.properties
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/messages/items/items.properties
@@ -72,9 +72,9 @@ items.armor.armor.detach_seal=You detach the seal from your armor.
 items.armor.armor.equip_cursed=The armor constricts around you painfully.
 items.armor.armor.identify=You are now familiar enough with your armor to identify it.
 items.armor.armor.incompatible=Interaction of different types of magic has erased the glyph on this armor!
-items.armor.armor.curr_absorb=This armor blocks up to _%d damage_ and requires _%d strength_ to use properly.
-items.armor.armor.avg_absorb=Typically this armor blocks up to _%d damage_ and requires _%d strength_ to use properly.
-items.armor.armor.too_heavy=Because of your inadequate strength wearing this armor will decrease your ability to move and evade.
+items.armor.armor.curr_absorb=This armor blocks _%d-%d damage_ and requires _%d strength_ to use properly.
+items.armor.armor.avg_absorb=Typically this armor blocks _%d-%d damage_ and requires _%d strength_ to use properly.
+items.armor.armor.too_heavy=Because of your inadequate strength wearing this armor will decrease your ability to move, evade, and defend.
 items.armor.armor.probably_too_heavy=Probably this armor is too heavy for you.
 items.armor.armor.excess_str=Because of your excess strength, you are _more evasive_ while wearing this armor.
 items.armor.armor.inscribed=It is inscribed with a _%s._
@@ -903,7 +903,7 @@ items.weapon.missiles.tamahawk.desc=This throwing axe is not that heavy, but it
 
 
 items.weapon.weapon.identify=You are now familiar enough with your weapon to identify it.
-items.weapon.weapon.too_heavy=Because of your inadequate strength you will use this weapon with decreased attack speed and accuracy.
+items.weapon.weapon.too_heavy=Because of your inadequate strength this weapon will hinder your attack speed, accuracy, and ability to surprise attack.
 items.weapon.weapon.excess_str=Because of your excess strength, you will deal up to _%d bonus damage_ with this weapon.
 items.weapon.weapon.incompatible=Interaction of different types of magic has negated the enchantment on this weapon!
 items.weapon.weapon.cursed_worn=Because this weapon is cursed, you are powerless to remove it.