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Campaign Veteran (25)
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Complete all single player levels 1-5
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Team Veteran (20)
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Complete "Hydroponics" in Co-op Assault
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Fighting Light (20)
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Complete any single player level without using any items
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Against the Odds (25)
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Complete single player levels 1-5 on Elite difficulty
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Ain't got time to bleed! (20)
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Complete 'Interface' single player mission without using a health pack
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Hard to Kill (20)
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Complete CO-OP Assault level 1, 2 or 3 without either player dying
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Knowledge is Power (20)
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Collect all the logs throughout the game
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Break Out the Arsenal (10)
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Fire every weapon and use every item in single player
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Killing Spree (10)
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Kill 20 aliens within 30 seconds in single player
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No Stone Unturned (10)
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Find all secret collectibles
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Elite Force (10)
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Kill 50 aliens in a row without taking damage in single player
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Born to Kill (10)
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Kill a total of 25 aliens in single player
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