You're running down the hallway trying to save your life from zombies. Your knife broke and you were a minute away from being bitten. But it seems luck is not on your side, because you stumbled over some stone falling to the floor with a crash, which attracted even more zombies.. And it seemed that he was your end, but a few loud shots make one of the zombies fall to the ground.

"Quickly! Hide somewhere!" The guy with the guns who ran out in front of you is shouting. It was Leon, although you didn't know it yet.