Good Stuff.
I had fun with this game. The range of weapons was quite good, Although you will find the Chainsaw and the Sawnoff the the most useful weapons. (Oh, And the Uzi)
The Sounds were quite good, Fairly Realistic although there could have been a few things which could have made it better.
The Graphics were great, The effects were nice and polished. Well Done.
The Style was a little outdated, Zombies are getting old now, And we should focus on new threats. Something like demons would have made the game more epic.
The Violence was satisfying. There could have been more gore and such to make the game more interesting.
The interactivity was good but maybe if you were the one to leave the bunker and search for weapons and survivors with a time limit the game would have been even better.
The Humor? The only real humor was the fat lady zombies and the scared survivors and the end of your bunkers life. Remember! Humor is the number one thing any game can have, It makes any game of any genre (Including horror) much more fun.
Overall, I give it a nine. Room for improvement but overall, An impressive game. Good work.
Oh, And congrats on getting this game to the the number one on Newgrounds. Good job!