[Nicketh]

Nice idea for a game, I think this would be really good, if you would work on it some more.
You could just let the player hold the ctrl button, instead of tapping it like a madman. I'm sure that would enhance the game. The shotgun fires a bit too fast, but I don't think anybody would last more than three rounds with a gun that shoots bullets every two seconds.
C4's were a good idea , but I noticed a bug with them. On the second round , I had the first right barricade broken , so I put a bomb behind the barricade in the first basement floor. The zombies eventually got through the barricade, exploded on the bomb, and the whole left wave of zombies(who still weren't past the first left barricade) exploded.

Oh, and I liked that 'special' enemy (it looked like Megaman with a hocckey mask), which could only be killed with a bomb.