diff --git a/src/Dodge/Bullet.hs b/src/Dodge/Bullet.hs
index a553754d4..8224fb37e 100644
--- a/src/Dodge/Bullet.hs
+++ b/src/Dodge/Bullet.hs
@@ -52,7 +52,7 @@ useAmmoParams it cr w = w & instantBullets .:~ (_amBullet bultype
 mvBullet :: Float -> World -> Bullet -> (World, Maybe Bullet)
 mvBullet x w bt' 
     | t <= 0 || magV (_buVel bt) < 1 = (endspawn w,Nothing)
-    | otherwise = bimap id (fmap dodrag) $ 
+    | otherwise = second (fmap dodrag) $ 
         hiteff bt hitstream w
   where
     endspawn w' = fromMaybe w' $ do
@@ -94,15 +94,15 @@ hitEffFromBul x bu hitstream w = case _buEffect bu of
     PenetrateBullet -> movePenBullet x bu hitstream w
     BounceBullet  -> case runIdentity (S.head_ hitstream) of
         Nothing -> (w, moveBullet x bu)
-        Just (hp,crwl) -> fromMaybe (expireAndDamage' x bu hitstream w) $ do
+        Just (hp,crwl) -> fromMaybe (expireAndDamage x bu hitstream w) $ do
             dir <- bounceDir (hp,crwl)
-            return $ (w,Just $ bu
+            return (w,Just $ bu
                 & buPos .~ hp +.+ normalizeV (_buPos bu -.- hp)
                 & buVel %~ reflectIn dir
                 & buTrajectory .~ BasicBulletTrajectory
                 & buTimer -~ 1
                 )
-    DestroyBullet -> expireAndDamage' x bu hitstream w
+    DestroyBullet -> expireAndDamage x bu hitstream w
 
 setFromToDams :: Bullet -> Point2 -> [Damage]
 setFromToDams bu p = map f (_buDamages bu)
@@ -117,14 +117,14 @@ damageThingHit bu (p,crwl) = case crwl of
     dams = setFromToDams bu p
     
 
-expireAndDamage' :: Float
+expireAndDamage :: Float
     -> Bullet
     -> Stream (Of (Point2, Either Creature Wall)) Identity ()
     -> World
     -> (World, Maybe Bullet)
-expireAndDamage' y bt things w = case runIdentity $ S.head_ things of
+expireAndDamage y bt things w = case runIdentity $ S.head_ things of
     Nothing -> (w, moveBullet y bt)
-    Just x -> (damageThingHit bt x w, destroyAt' (fst x) bt)
+    Just x -> (damageThingHit bt x w, destroyAt (fst x) bt)
 
 moveBullet :: Float -> Bullet -> Maybe Bullet
 moveBullet x pt = Just $ pt
@@ -132,8 +132,8 @@ moveBullet x pt = Just $ pt
     & buOldPos .~ _buPos pt
     & buTimer -~ 1
 
-destroyAt' :: Point2 -> Bullet -> Maybe Bullet
-destroyAt' hitp pt = Just $ pt 
+destroyAt :: Point2 -> Bullet -> Maybe Bullet
+destroyAt hitp pt = Just $ pt 
     & buPos     .~ hitp +.+ normalizeV (p -.- hitp)
     & buOldPos  .~ p
     & buVel     .~ 0
@@ -146,7 +146,7 @@ movePenBullet x bu hitstream w = case runIdentity (S.next hitstream) of
     Left _ -> (w,moveBullet x bu)
     Right ((p,crwl),strm) -> if penThing crwl
         then first (damageThingHit bu (p,crwl)) $ movePenBullet x bu strm w
-        else expireAndDamage' x bu hitstream w
+        else expireAndDamage x bu hitstream w
 
 penThing :: Either Creature Wall -> Bool
 penThing (Left _) = True
diff --git a/src/Dodge/Particle/HitEffect/ExpireAndDamage.hs b/src/Dodge/Particle/HitEffect/ExpireAndDamage.hs
deleted file mode 100644
index b7db21dd9..000000000
--- a/src/Dodge/Particle/HitEffect/ExpireAndDamage.hs
+++ /dev/null
@@ -1,29 +0,0 @@
-module Dodge.Particle.HitEffect.ExpireAndDamage where
-import Dodge.Data
-import Dodge.Particle.Update
---import Dodge.Wall.Damage
-import Geometry
-import LensHelp
-import qualified Data.IntMap.Strict as IM
-import Streaming
-import qualified Streaming.Prelude as S
-
-expireAndDamage :: (Particle -> Point2 -> [Damage])
-    -> Particle
-    -> Stream (Of (Point2, Either Creature Wall)) Identity ()
-    -> World
-    -> (World, Maybe Particle)
-expireAndDamage fdm bt things w = case runIdentity $ S.head_ things of
-    Nothing -> (w, mvPt' bt)
-    Just x -> (doDamages fdm x bt w, destroyAt bt)
-
-doDamages :: (Particle -> Point2 -> [Damage])
-    -> (Point2, Either Creature Wall)
-    -> Particle
-    -> World
-    -> World
-doDamages fdm (p,thhit) bt = case thhit of
-    Left cr -> creatures . ix (_crID cr) . crState . csDamage .++~ dams
-    Right wl -> wallDamages %~ IM.insertWith (++) (_wlID wl) dams
-  where
-    dams = fdm bt p
diff --git a/src/Dodge/Particle/Update.hs b/src/Dodge/Particle/Update.hs
index 6ef388c80..805378f53 100644
--- a/src/Dodge/Particle/Update.hs
+++ b/src/Dodge/Particle/Update.hs
@@ -6,11 +6,6 @@ mvPt' :: Particle -> Maybe Particle
 mvPt' pt = Just $ pt
     & ptTimer -~ 1
 
-destroyAt :: Particle -> Maybe Particle
-destroyAt pt = Just $ pt 
-    & ptUpdate .~ killParticleUpdate
-    & ptTimer %~ (min 3 . subtract 1)
-
 killParticleUpdate :: World -> Particle -> (World,Maybe Particle)
 killParticleUpdate w pt 
     | _ptTimer pt <= 0 = (w,Nothing)