Achievement Description Value Barrel Rolled Kill a Special Infected with an exploding barrel. 50 Chaos Generator Have all 3 generators running at once in "The Sacrifice" finale. 50 Kill Bill Have Bill sacrifice himself for the team. 50 Sacrifizzle As a Special Infected, incap someone who is trying to sacrifice themselves. 50 Supreme Sacrifice Complete "The Sacrifice". 50
Contributed By: Guard Master.