Really like the use of 3D. Sound design is good if not a little unbalanced.
Enemies are also really hard to punch to death, because its hard to tell if you are hitting them, and it seems fists do almost no damage. The turn speed is a little slow. Because you can't aim with the mouse I would have personally tied the action to a key, or at least provided the option.
Also the enemies don't do anything, don't know if that was intentional or not.
Overall, nice game.