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Battle-hardened
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Complete all single player levels 1-5
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Elite Unit
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Complete all single player levels 1-5 on Elite difficulty
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Exterminator
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Kill 1000 aliens in single player
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Frag-master
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Kill 10 aliens with one frag grenade
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Hidden Treasure
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Find all secret collectibles
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Immobilised
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Stun 10 aliens with one stun grenade
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Meat Grinder
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Kill 250 aliens on any multiplayer Survivor level
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More Speed, Less Haste
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Complete 'Vengeance' single player level on Veteran difficulty in 17 minutes or less
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Seasoned Squaddie
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Complete any multiplayer level
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Survivor
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Stay alive for 8 minutes on any single player Survivor level
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Tank
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Take 500 damage on 'Determination' single player mission without dying
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The Informed
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Collect all the logs throughout the game
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Time to Party
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Complete 3 Co-op Assault multiplayer games
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