Very good, basically AWESOME
Graphics: Very good especially for a flash game, loved the zombie variations and how my (useless) survivors would switch guns every so often.
Style: Zombie Defense game, not too many out there for now.
Sound: A total different zombie groan for every zombie.
Violence: Decapitating (with a bullet lol) blood fountains from their heads, i loved how the chest shots were basically pointless, loved the hole in the zombies whenever they got shot.
Interactivity: I didnt really like how you had to move just to shoot at different spots, but it added to its score to move and shoot.
Humor: Not too much humor, i loved how the fatass zombies would run towards you, its like they smelled mcdonalds or some other crap like that.
Overall: A perfect 10, I liked how you had to manage your daylight time, that added a lot to it, the chainsaw should have a limited battery, so you couldnt just stand there decapitating zombies with a chainsaw. My favorite combination was the hunting rifle and the uzi, the rifle is like a 1 hit kill anywhere. Well, that is all for my review, a very good game, made by a good author.