Pretty sweet, the fact that it's repetitve can't be charged against this game since it's pretty much the point of the Zombie Shooter type, but you really should make the upgrade courb higher for pickable weapons, as the pistol is the only one that remains effective past 5k points or so. Apart from that, the art, rythm and zombie types are all great, with kudos for the rolling move (so simple, and yet no shooter game hero seems to come to pull it off :p).