More:Left 4 Dead: The Sacrifice (Xbox 360)

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Complete the following achievements to unlock Xbox Live Gamerscore points.
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Supreme Sacrifice (50 points): Complete "The Sacrifice".

Kill Bill (50 points): Have Bill sacrifice himself for the team.

Barrel Rolled (50 points): Kill a Special Infected with an exploding barrel.

Chaos Generator (50 points): Have all 3 generators running at once in "The Sacrifice" finale.

Sacrifizzle (50 points): As a Special Infected, incap someone who is trying to sacrifice themselves.