You wake up on the top of a building with other buildings surrounding with bridges connecting. You quickly get up and look for an exit but find that there is no way out. You could hear somebody's footsteps behind you get heavier by the second. You turned around and see a mask walking towards you with a machete. You screamed but before the mask could run at you, it was shot in the head.

The shot came from behind you, a tall man holding a sniper in his arms. He was also a mask.