ME2: Gain the loyalty of the Cerberus Operative

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

ME2: Gain the loyalty of the krogan

ME2: Confront the Shadow Broker

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

ME2: Warp the barriers of 25 enemies

ME2: Incinerate the armor of 25 enemies

ME2: Gain the loyalty of the thief

ME2: Successfully recruit the quarian

ME2: Successfully recruit the krogan

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

ME2: Successfully recruit the biotic Convict

ME2: Complete any research project in the Normandy's laboratory