Very very good game.
A great game. What can I say. I do have some suggestions though, but I'll lace them with compliments first.
Good graphics, especially on the moving characters. I know that is hard to do sometimes, but you pulled it off very well.
Easy gameplay. It was simple, if you wanted to play a game for thirty seconds, this would be it.
Good idea. The zombie slaying, survivor-finding mix-up made the game a bit more than just a shoot-em-up.
I also like that secret gun right at the end. Sort of a reward, because when the end of the game comes, you feel disappointed its over, but at least you got to own lots of zombies with that killer gun.
Now for the suggestions.
There was just the tiniest bit of lag when I used the faster shooting guns. Otherwise thespeed was fine.
The game was just a little too simple for my taste, but that is probably just me. If you had added just a bit more depth, like survivor placement, barricade placement, or special items or something, that would be cool. But then again, some people might not like that
The game does not get that much harder as you progress. Sure there's the different types of zombies, but they just didn't add enough to the mix. Needs to challenge the gamers a bit more.
Finally, it's a bit short. I was very sad when the game ended, and I really wanted it to go on. I know nothing lasts forever, but if there was a bit more, I would have been so happy. If you want to get more views, then add something that will make people want to play your game again and again. You could just make it so that the game just continuously gets harder until you die, and records a highscore or something. Or add a save function.
Summary: Great game. I would have rated it a 5, but my friend has a game in the contest (Tower Tactics, I believe its third right now), but if I did, he would yell at me. Peace.