Friend or Foe
ME2: Obtain geth technology
Scholar
ME2: Unlock 15 new Mass Effect 2 codex entries
Warp Specialist
ME2: Warp the barriers of 25 enemies
Tactician
ME2: Hit 20 different targets with multiple biotic powers to combine the effects
Head Hunter
ME2: Perform 30 headshot kills with any weapon on humanoid targets
Agent
ME2: Complete 5 missions discovered by scanning unexplored worlds
Treason
ME2: Gain the loyalty of the quarian
Catharsis
ME2: Gain the loyalty of the biotic Convict
Doppelganger
ME2: Help the Justicar resolve her mission
Cat's in the Cradle
ME2: Gain the loyalty of the Assassin
Fade Away
ME2: Gain the loyalty of Archangel
Revenge!
ME2: Gain the loyalty of the mercenary
Ghost of the Father
ME2: Gain the loyalty of the Cerberus Operative
Digital Exorcist
ME2: Successfully shut down the rogue VI in Project Overlord
Battlemaster
ME2: Gain the loyalty of the krogan
Big Game Hunter
ME2: Thresher Maw defeated
The Cure
ME2: Gain the loyalty of the Professor
Incineration Specialist
ME2: Incinerate the armor of 25 enemies
Ghost Ship
ME2: Complete the investigation of a derelict alien vessel
The Quarian
ME2: Successfully recruit the quarian