Audio is a banger. Careful with your lighting as im pretty sure this game could give someone a siezure. The movement handles a little loose for my taste, as I was still moveing for around .5 seconds after letting go of a key.
Really interesting mechanics, and creative gameplay. Consider adding some visual q's to the enemy when they are dead, as it is hard to tell when an enemy is dead, and I found myself overkilling quite a lot.