Great idea and game but needs some improvement.
Graphics - What can I say, it's stick men! The animations were really well animated and it looks very smooth and slick.
Style - Nice game and idea. It can use lots of improvement in the way that you shouldn't limit ammo and supplies so much. We should be able to carry at least 2 different weapons, and if you run over a weapon of the same type of one that your carrying, the ammo just goes into instead of picking up a totally new gun. Also, the "health bar" idea was really unique, but it was extremely static and unimpressive. I suggest using a type of 'Gears of War' kind of health bar to make it a lot cooler =).
Sound - Some of the music was really grungy and the sound effects went with the game, but I still prefer to use my own music.
Humor - I laughed when I got pwned by like 20 firebats. That was the only time I laughed.
Overall - Nice game, but you should make a sequel with alot more features and stuff.