Great game, not as good as the original one tho.
I played through the entire single person campaign and it can be done in 6-8 hours total so this is a game you can rent and beat in a few days so no real sense in buying it in my oppinion. I would definately recommend it to anyone who likes zombie games, there are swarms of zombies to hack up and chop to bits.
I absolutely hole the melee portion of the game moreso than any other game. Melee can get old on most games but in this, using the fireman's axe and the machete and the chainsaw to munch up zombies never got old. It's much more fun than using the guns to shoot people. There is even a guitar you can beat zombies down with and makes a twang sound out of it :)
Overall a good game, a little short, but i would imagine the online multiplayer would be a good reason to buy the game. I'd easily et the 3rd installment if they do create one, as hacking up zombies never gets old.