ME2: Gain the loyalty of the Cerberus Operative

ME2: Gain the loyalty of Archangel

ME2: Gain the loyalty of the krogan

ME2: Incinerate the armor of 25 enemies

Kill 100 enemies with melee attacks in Mass Effect 1, 2 or 3

ME2: Fully upgrade a weapon

ME2: Hit 20 different targets with multiple biotic powers to combine the effects

Kill 2,000 enemies in Mass Effect 1, 2 or 3

ME2: Successfully recruit the Assassin

ME2: Successfully recruit the krogan

ME2: Gain the loyalty of the biotic Convict

ME2: Visit 100% of the planets in an unexplored cluster