Hmm..
Well as unique as this is i feel i have to give you a nine for the art and the idea.
And ... it is a good idea... it kind of surprised me how much you did for a game where you just punch and kick zombies...
I Was thinking perhaps if you made another version of this game let the player use his surroundings to take out the enemy ^ ^.
LIke chairs...bottles... flaming molotov, Perhaps use skills and make air combos a little more possible... i see real possibilities with this idea.