Look wise its good. Nothing new, but it looks good. What I don't like though is that the zombies level up as fast if not faster than your weapons- you never seem to kill them any quicker- in fact the opposite most times.
In the end... I have seen better, but I have seen worse too.
I have to tell you, I LOVE the look of this game. It's cartoony, yet bloody and serious and cute at some points (I like the fact that the smiling girl zombies look like they're tickling you when they're attacking). As for the actual gameplay, it's pretty good though I've seen other games like this. I appreciate the fact that the object you hit light up to indicate you hit them (which is good when a box is in-between explosives). The level upgrades are all good things, no stupid filler upgrades. So far, the weapons seem pretty good (except for the wrench. Why would I buy something that has the same stats as my current weapon?). The limited ammo does get annoying as it is fun to shoot things in the game, but not much fun to smack enemies with a crowbar.
I do feel that this game needs a different mode, like a survival mode to see how far you can get (and maybe another mode where all your weapons have unlimited ammo and like a hundred zombies just start coming art you and you can just go on a zombie killing spree).