Gain the loyalty of the krogan
Gain the loyalty of Archangel
Gain the loyalty of the Professor
Gain the loyalty of the quarian
Help the Justicar resolve her mission
Hack a geth collective
Use the Omega 4 Relay
Save humanity throughout the galaxy from certain annihilation
Survive suicide mission
Complete Mass Effect 2 twice, or complete it once with a character imported from Mass Effect 1
Thresher Maw defeated
Obtain geth technology
Defend a human colony from attack
Gain the loyalty of the Cerberus Officer
Gain the loyalty of the Cerberus Operative
Gain the loyalty of the biotic Convict
Complete the investigation of a derelict alien vessel
Successfully recruit the krogan
Complete a mission discovered by scanning an unexplored world
Visit 100% of the planets in an unexplored cluster
Successfully recruit the quarian
Successfully recruit the Justicar
Successfully recruit the Assassin
Save your crew from an overwhelming attack
Return to active duty
Successfully recruit the biotic Convict
Perform 30 headshot kills with any weapon on humanoid targets
Make 20 enemies scream as they fall or are set on fire
Retrieve mineral resources by scanning and probing a planet in the galaxy map
Unlock 15 new Mass Effect 2 codex entries
Obtain 10 technology upgrades
Successfully recruit Archangel
Successfully recruit the Professor
Complete any research project in the Normandy's laboratory
Personalize your armor in your quarters on the Normandy
Evolve any power
Collect 6 Cerberus data packets scattered across Aite
Successfully shut down the rogue VI in Project Overlord
Use all information terminals in the Shadow Broker's stronghold
Defeat the Shadow Broker's Assassin
Confront the Shadow Broker
Complete the Shadow Broker Mission pack on Hardcore or Insanity
Reminisce with Liara on the Normandy
Complete the Arrival DLC pack
Survive all five waves in the battle for Object Rho
Rescue Dr. Amanda Kenson without attracting hostile attention
Gain the loyalty of the Assassin
Complete the game on the "Insanity" difficulty level without changing the setting
Keep your team alive through the suicide mission
Successfully pursue a relationship with a teammate
Shoot and kill 20 enemies while they're knocked back by a punch
Hit 20 different targets with multiple biotic powers to combine the effects
Kill enemies with 5 different heavy weapons during the game
Disrupt the shields of 25 enemies
Warp the barriers of 25 enemies
Incinerate the armor of 25 enemies
Complete 5 missions discovered by scanning unexplored worlds
Reach Level 30 with one character
Fully upgrade a weapon
View all advanced combat training videos at Shepard's private terminal.
Gain the loyalty of the mercenary
Gain the loyalty of the thief
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