Achievement Description A Mess of Stiff Staff Sergeants Kill Inferno's Sergeants in single player Airborne Pilot a helicopter in single player Extraction Mission 1 - Rescue all the civilians in single player (Coldstrike DLC required) From Cold Dead Hands Steal all Inferno's Weapon Crates in single player Goody Two Shoes Bring 20 Prisoners to the Church in single player Inferno's Briefs Steal all the Document Briefs in single player Intelligence Mission 2 - Acquire all intel on Coldstrike’s plans in single player (Coldstrike DLC Required) Jonesing for Relics Return all the Relics to the Museum in single player Lord Master of Great Skill Get "skill level - alien" in single player Mega Kill Combo Get a 50x Damage Streak in single player Naughty or Nice Receive a present from Santa Claus Pansy Worm Mission 3 - Defeat the Panzer Wyrm (Coldstrike DLC required) Supply Problems Destroy all Mining Carts in the Kaabe Mountains in single player The Daily Grind Get a character to max level To Hell and Back Complete Mission 9 on any Difficulty in single player Tough Stuff Complete all missions on Hardcore Difficulty
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