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Missing in Action: Save your crew from an overwhelming attack (5)
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Very Elusive: Return to active duty (10)
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The Convict: Successfully recruit the biotic Convict (10)
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The Krogan: Successfully recruit the krogan (10)
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The Archangel: Successfully recruit Archangel (10)
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The Professor: Successfully recruit the Professor (10)
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The Quarian: Successfully recruit the quarian (10)
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The Justicar: Successfully recruit the Justicar (10)
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The Assassin: Successfully recruit the Assassin (10)
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Friend or Foe: Obtain geth technology (10)
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Colony Defense: Defend a human colony from attack (25)
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The Prodigal: Gain the loyalty of the Cerberus Officer (10)
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Ghost of the Father: Gain the loyalty of the Cerberus Operative (10)
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Catharsis: Gain the loyalty of the biotic Convict (10)
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Battlemaster: Gain the loyalty of the krogan (10)
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Fade Away: Gain the loyalty of Archangel (10)
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The Cure: Gain the loyalty of the Professor (10)
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Treason: Gain the loyalty of the quarian (10)
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Doppelganger: Help the Justicar resolve her mission (10)
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Cat's in the Cradle: Gain the loyalty of the Assassin (10)
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A House Divided: Hack a geth collective (10)
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Ghost Ship: Complete the investigation of a derelict alien vessel (25)
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Suicide Mission: Use the Omega 4 Relay (50)
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Mission Accomplished: Save humanity throughout the galaxy from certain annihilation (125)
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Against All Odds: Survive suicide mission (15)
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Insanity: Complete the game on the "Insanity" difficulty level without changing the setting (75)
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No One Left Behind: Keep your team alive through the suicide mission (75)
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Long Service Medal: Complete Mass Effect 2 twice, or complete it once with a character imported from Mass Effect 1 (75)
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Paramour: Successfully pursue a relationship with a teammate (50)
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Head Hunter: Perform 30 headshot kills with any weapon on humanoid targets (10)
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Brawler: Shoot and kill 20 enemies while they're knocked back by a punch (10)
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Big Game Hunter: Thresher Maw defeated (10)
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Tactician: Hit 20 different targets with multiple biotic powers to combine the effects (10)
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Master at Arms: Kill enemies with 5 different heavy weapons during the game (15)
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Merciless: Make 20 enemies scream as they fall or are set on fire (10)
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Overload Specialist: Disrupt the shields of 25 enemies (15)
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Warp Specialist: Warp the barriers of 25 enemies (15)
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Incineration Specialist: Incinerate the armor of 25 enemies (15)
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Operative: Complete a mission discovered by scanning an unexplored world (15)
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Agent: Complete 5 missions discovered by scanning unexplored worlds (50)
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Prospector: Retrieve mineral resources by scanning and probing a planet in the galaxy map (5)
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Explorer: Visit 100% of the planets in an unexplored cluster (10)
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Power Gamer: Reach Level 30 with one character (10)
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Scholar: Unlock 15 new Mass Effect 2 codex entries (15)
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Technician: Obtain 10 technology upgrades (15)
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Weapon Specialist: Fully upgrade a weapon (15)
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Scientist: Complete any research project in the Normandy's laboratory (10)
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Fashionista: Personalize your armor in your quarters on the Normandy (5)
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Power Full: Evolve any power (15)
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Highly Trained: View all advanced combat training videos at Shepard's private terminal (15).