I had a lot of fun with this game. Its length is fitting with its concept making the pacing really good. The combat system isn't complicated, but isn't without challenge which is quite satisfying. The story is interesting and delightfully gore-filled.
The only negative I would want to point out, is the aiming system. It would possibly be better if you could aim with the mouse, considering it's hard to get those enemies diagonal to you.
I made a let's play of this, if anyone wants to have a look: (warning: contains excessive cussing and crude "humor") https://www.youtube.com/watch?v=I4gr3X7zMfs