A friend got to play this game today, though I had been resisting for a while. I will admit that the theme isn't one I like.
Trying to be objective, the game is decent, but in the spirit of a zombie-infested world where mainly you're just putting off your death, I found it to be harsher than I'd like. After the first round of zombies (which was manageable enough), it got much worse very quickly. Now you have to reveal two zombies with which to deal; in the third round they were three. It is possible to all win, but mainly you just have to die last to win this game, most of the time.
It's not for me, but I can see this being a great game for anyone who is very competitive. It helps that there are lots of items to choose from - you will never ever play the same game twice. That sort of customization is very important in games, and here you'll find it by the spadeful.