-Suddenly I've noticed how anemic it feels when you hit things. It would be nice if there was some more visual feedback besides the blood drop. Maybe a flash of red or something across the sprite. It also seems the sfx for an enemy getting hit is lower in the mix that at default volume I wasn't hearing it all. Though that may just be me, my left ear is a bit clogged.
-I like the stark contrast, the main menu is plain with loud excited music but the game is is spilling guts to elevator music. Honestly can't remember if the menu was in the game before, but there you have it.
-I tried cultish vs easy difficulty, I like how you also altered the enemy placement and level design for the given difficulty.
-Grenade launcher could use some punch. It also took me awhile to realize it pierced.
Looking sharp.