Wreckage 20 points: Complete Chapter 9 on any difficulty setting. Strange Transmissions 20 points: Complete Chapter 8 on any difficulty setting.
20 points: Complete Chapter 7 on any difficulty setting. Greenhouse Effect 20 points: Complete Chapter 6 on any difficulty setting. True Believer 20 points: Complete Chapter 5 on any difficulty setting. Lab Rat 20 points: Complete Chapter 2 on any difficulty setting.Īll Systems Go 20 points: Complete Chapter 3 on any difficulty setting.Ĭannon Fodder 20 points: Complete Chapter 4 on any difficulty setting. Note: Some codes may only be enabled once per game.Ĭomplete the following achievements to unlock Xbox Live Gamerscore points.ĭead On Arrival 20 points: Complete Chapter 1 on any difficulty setting. Press Start to resume the game with the code activated. Press Start to pause game play, then enter one of the following codes.
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