Well, my review on the zombies:
Guns: Meh, not as good as WaW, about the same as BO IMO.
Zombie AI: Same as BO. Nothing new, welcome to the CoD copy/paste team.
Maps: Godawful. Just no. Made even worse by pointless fire and lava being everywhere. Hopefully some WaW or BO maps will be added in DLC
Alternative Gamemodes: Nice idea, doesn't work too well, though. Grief goes on for ages, and Tranzit is just boring.
5/10 try harder next time