Very, very, well done
I absolutely loved it!
The game had great graphics, and there was not a glitch to be found.
The shooter was very nice, and the weapon selection broad and useful.
The gore was a t a minimum, which is very good, with enough blood to show that you did some damage.
Nice characters, very simplistic, and yet detailed, a perfect balance.
Shooting was accurate to a point where it is just off of reality, and still remains within the realm of video-game shooting.
There were only two things I had trouble with:
1. Shooting began to be a nuisance; I think it might have worked out better if it had been mouse control, instead of shooting where you point.
2. The score system was frustrating, and made it harder then necessary to advance weapons, which some would say is an added challenge, but I just believe to be a minor pain.
But all else aside, it was a great game.
I really hope to see more games like this in the future.
I think that maybe you should try your hand at flash animating. I think that Boxhead would be a great main character for an adventure/comedy.
Over all, you did very well. Congratulations on making such a wonderful game. Keep up the amazing work!