diff --git a/scripts/entities/base_enemy.gd b/scripts/entities/base_enemy.gd
index ce51afc..bdb8180 100644
--- a/scripts/entities/base_enemy.gd
+++ b/scripts/entities/base_enemy.gd
@@ -256,11 +256,11 @@ func _handle_attack(action: Dictionary) -> void:
 
 
 ## Damage API
-func apply_damage(damage: int) -> void:
+func apply_damage(damage: int, attacker: Entity = null) -> void:
 	## Apply damage through EntityLifecycle via AutoloadHelper
 	var lifecycle: _EntityLifecycle = AutoloadHelper.entity_lifecycle()
 	if lifecycle:
-		lifecycle.apply_damage(null, entity, damage)
+		lifecycle.apply_damage(attacker, entity, damage)
 	else:
 		entity.apply_damage(damage)
 
diff --git a/scripts/entities/keeper.gd b/scripts/entities/keeper.gd
index e9ecd12..33c6479 100644
--- a/scripts/entities/keeper.gd
+++ b/scripts/entities/keeper.gd
@@ -59,12 +59,12 @@ func trigger_damage_effect() -> void:
 
 ## Apply damage to the Keeper entity and trigger recoil on the apparition.
 ## Delegates to EntityLifecycle for canonical state transitions.
-func apply_damage(damage: int) -> void:
+func apply_damage(damage: int, attacker: Entity = null) -> void:
 	if entity == null:
 		return
 	var lifecycle: _EntityLifecycle = AutoloadHelper.entity_lifecycle()
 	if lifecycle:
-		lifecycle.apply_damage(null, entity, damage)
+		lifecycle.apply_damage(attacker, entity, damage)
 	else:
 		entity.apply_damage(damage)