The game in general. Black ops was the first good story that Call of Duty has had in years and the game still revolves around online which is just stupid. They pop a new one out every year and nothing changes aside from the graphics. Its a huge waste of money.
I wouldn't stay in one specific place. The zombies would eventually pick up your scent and just find you regardless of how well barricaded you are they would find some way to get in. I would stop at stores to pick up food and everything but just the necessities. Look at night of the living dead. They stayed in a house in the middle of no where and they all still died. :p