This is a FUN game. The minatures are quite nice, and the feeling when you have a board literally SWARMED in zombies is quite awesome. In my mind there are just a few minor issues that distract from my enjoyment:
1. You are penalized for levelling. The strenght of the zombie horde (well, amount) is based on the highest level character on the board... So you want to kill that zombie with that chainsaw, because it's awesome? Well, if you want to win the game you better leave it be if you're about to level up ahead of the rest of the players, because otherwise you pretty much doom your collective chances.
This is a cool mechanic in some ways, as it forces cooperation and ensures no one is way more powerful than other players... But honestly, it just feels wrong here. There are zombies, there are awesome weapons, please just let me use them and feel the rush of slashing zombie after zombie.
2. The shooting mechanic. If you shoot into a square with a friendly model in you ALWAYS (no randomizing, ALWAYS MEANS ALWAYS) hit your friend and not the zombie. Now, this would actually be fine to me on its own - it's just a really really harsh friendly fire. It just feels wrong however that you can easily shoot with any weapon, no matter how much scatter you'd imagine it to have, through a square with a friendly model without any risk and hit the zombie in the square behind them at the same time.
I just wish the game would make its mind up in this regard.
Otherwise, it's a fine, fine game.