Achievement Description Against The Odds Completed the Single Player game on Elite difficulty Aint Got Time To Bleed Finished 'Interface' single player level without using any health packs Born to Kill Killed a total of 25 aliens in single player Break Out The Arsenal Used all weapons and items in the game Campaign Veteran Single player completed Elite Force Killed 50 aliens in a row without taking any damage Fighting Light Finished a single player level without using any items Hard To Kill Finished CO-OP Assault level 1,2 or 3 with no player losing a life Killing Spree Killed 20 aliens in 30 seconds Knowledge Is Power Picked up 100% of the logs No Stone Unturned Found all secret collectibles Team Veteran Complete "Hydroponics" in Co-op Assault Time to Party Complete 3 Co-op Assault multiplayer games
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