diff --git a/src/game/ai/deciders.ts b/src/game/ai/deciders.ts
index 2925160..c2d48ed 100644
--- a/src/game/ai/deciders.ts
+++ b/src/game/ai/deciders.ts
@@ -81,9 +81,6 @@ export class ConsequenceFunctionDecider implements Decider {
   }
 }
 
-/**
- * A [[ConsequenceFunctionDecider]] that filters out status effects
- */
 export class NoSurrenderDecider extends ConsequenceFunctionDecider {
   constructor () {
     super(
diff --git a/src/game/combat/perks.ts b/src/game/combat/perks.ts
index 9e5a139..81a5466 100644
--- a/src/game/combat/perks.ts
+++ b/src/game/combat/perks.ts
@@ -1,4 +1,4 @@
-import { Effective } from '../combat'
+import { Effective, Damage, DamageType } from '../combat'
 import { TextLike } from '../language'
 import { Creature } from '../creature'
 import { TestCategory } from './tests'
@@ -9,6 +9,36 @@ export abstract class Perk extends Effective {
   }
 }
 
+export class BellyBulwakPerk extends Perk {
+  constructor () {
+    super(
+      "Belly Bulwark",
+      "Take 50% less damage for every bodyweight's worth of prey in you"
+    )
+  }
+
+  preDamage (creature: Creature, damage: Damage): Damage {
+    const newDamage = new Damage()
+
+    damage.damages.forEach(
+      instance => {
+        const affected = (instance.type !== DamageType.Pure && instance.type !== DamageType.Heal)
+        const bulk = creature.voreStats.Bulk
+        const mass = creature.voreStats.Mass
+        const modifier = Math.pow(0.5, bulk / mass)
+        newDamage.damages.push(
+          {
+            amount: affected ? instance.amount * modifier : instance.amount,
+            target: instance.target,
+            type: instance.type
+          }
+        )
+      }
+    )
+    return newDamage
+  }
+}
+
 export class RavenousPerk extends Perk {
   constructor () {
     super(
diff --git a/src/game/creatures/player.ts b/src/game/creatures/player.ts
index a3eed0a..ee0e5bc 100644
--- a/src/game/creatures/player.ts
+++ b/src/game/creatures/player.ts
@@ -7,6 +7,7 @@ import { TogetherCondition } from '../combat/conditions'
 import { DamageConsequence } from '../combat/consequences'
 import { OpposedStatTest, TestCategory } from '../combat/tests'
 import { LogLine } from '../interface'
+import { RavenousPerk, BellyBulwakPerk } from '../combat/perks'
 
 export class Player extends Creature {
   constructor () {
@@ -30,6 +31,9 @@ export class Player extends Creature {
     this.containers.push(bowels)
     this.perspective = POV.Second
 
+    this.perks.push(new RavenousPerk())
+    this.perks.push(new BellyBulwakPerk())
+
     this.actions.push(
       new CompositionAction(
         "Bite",