this game was one of the top hits for the 360. this game has so many zombies that its not even funny. The story of the game is pretty good. They are too easy that you could probably be able to beat this game in a day. and for the achviments, if you can think it, you could probably get that achviment. But the A.I for the game is really dumb at times, they'll sometimes get in the way of fire when you are trying to kill zombies. As you get higher level for your character (Frank), more and more zombies start to appear. I also though that they were bitting of the movie Dawn of the Dead, but who cares. So i recommend that you pick up this title for the 360.