I had some fun playing this game, but there are too many things which I couldn't enjoy:
1) Graphics: combining pixel art with hand-drawn stuff is, probably, the worst idea you could ever have;
2) Gameplay: some levels are simply impossible not to get hit on (I mean those levels where you start with a saw in your face, for example) and the upgrades from the shop are quite useless.
On the other hand, the music is enjoyable and the game is definitely quite fun for the first 20 minutes. Thus, I would totally recommend it to a friend.