Pretty nice try.
If you hold down the change weapon button for a half-second or more, the weapons switch back and forth really fast. I you don't buy a weapon you can't do anything with the knife(?). A computer player option would be nice. Finally, Work on the graphics a little. I'm not a gore hound, but if I shoot someone, I'd at lest expect a bullet hole. Looks pretty good otherwise. Keep working on it.