A good Game about making your enemies hurt you to hurt them!
I like the idea of the Game and how well it fits with the theme. Even better you cant make yourself hurt too much, or you die, which makes you think which one you try to kill or when you try it.
My Suggestion would be to make the door only open when every enemy is dead, but that would mean that some levels need a rework (and something like this already exist in the game (in form of a boss)). Also it lacked some sounds or music, but it didnt make the game less fun.
Its a cool game!