Killing hostages

An executioner's lineup in Vaas' Camp.

As the player escapes from the camp, there will come a moment when Jason is asked to mantle up a stack of crates to reach the next point of the camp. Grant will climb ahead of the player and encourage him to follow up quickly.

But if the player stays behind for a moment and looks through the chain link fence to the left, he can see Vaas systematically going down execution row putting a bullet into the heads of four hostages.