| Achievement Guides | | Published on September 24, 2009 This one is cumulative so you can do it through multiple levels (and probably campaigns) just overcharge the plasma pistol so the brute's armor is gone, then switch to your pistol (automag) and get a headshot quickly, rack up 10 of these and the achievement is yours |
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| Xbox 360 Achievements, Guides & Comments
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| Xbox 360 Achievements, Guides & Comments
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