Excellent.
One of the finest games I've played in a long time. There's a few things, though. It was a very easy game, I don't mind that at all, but it gets a bit repetitive after a while, so I think a boss zombie or somthing would make it more challenging. My favorite weapons were the barret and chainsaw. The chainsaw was a bit difficult to use since the barricade wasn't straight. Oh, and no matter how strong body armor is, one can't just take in a bullet without getting pushed back. Especially headshots. And even more from the barret.