Awesome.
Graphics, Sound, Gameplay awesome. I did complete it quite easily though. I was trying to think of ways to make it better, it wasnt easy to think of them. Anyway... I think if you didnt have unlimited ammo it might change things a bit. If you had to search for ammo aswell. Also you could make it possible to interact with other survivors. Maybe change their weapons. Or let them get bitten and turn into zombies, that would be cool.
Awesome game. Fudging Awesome.