I loved it
EPIC music, smooth gameplay (at least not on my comp, but I tried it on others), the only thing I could have done with was cash and a way to purchase things for the guns, or even other guns, but the nano cells took care fo that quite readily... perhaps a different selection of grenades, like napalm woulda been sweet.
Other than that, this game is not only really replayable, but its made its way to the top of my favorites, and I must go find osme of this band now, cause the music really set the tone for the whole thing, and it was absolutely perfect, the metal riffs along with massivly slaughtering hordes and hordes of zombies just makes for a really enjoyable annihalation atmosphere
Good work, cant wait for a sequel, hoping you make this a whole series of games really lol