I've had it, played a few levels when ZombiU gets too tense. Graphically, it is beautiful, and there seems to be some good level design going on. I'm not as cool with some of the balancing between characters-- there is some combat in the game, but it seems that in most normal situations, you MUST use the fat guy, because the thief and the wizard can't fight. Which is a shame, because it would be more fun if you had some more options with all the characters.
The other criticism I would have is that it's $20 for the Wii U version, and a whole lot less on Steam. Now, I don't really see what the benefit of playing this on the game pad is. Having done so, I rarely find myself taking advantage of gamepad abilities (the touch screen) and I just use default controls that are identical to what you would see on Steam.