Amazing!
Easily the best zombie game I have ever played. With plenty of enemies, an awesome car, and upgrades, I loved it from start to finish.
When I first opened the game, I had the idea that I was going to be shooting and driving at the same time. When I learned I would only do that to zombies that grabbed onto my car, it was sort of dissapointing, but I enjoyed the game all the more when I saw just how many obstacles that were in my way. I couldn't concentrate on both.
When the helicopters came, I wished that I could at least shoot at them, driving them into signs worked, but sometimes you couldn't do that without getting hit by a vehicle in the way.