ME2: Acquire all trophies

ME2: Save your crew from an overwhelming attack

ME2: Defend a human colony from attack

ME2: Use the Omega 4 Relay

ME2: Keep your team alive through the suicide mission

ME2: Successfully recruit Archangel

ME2: Successfully recruit the biotic Convict

ME2: Successfully recruit the krogan

ME2: Successfully recruit the quarian

ME2: Gain the loyalty of the krogan

ME2: Gain the loyalty of the biotic Convict

ME2: Gain the loyalty of Archangel

ME2: Gain the loyalty of the Professor

ME2: Gain the loyalty of the quarian

ME2: Perform 30 headshot kills with any weapon on humanoid targets

ME2: Make 20 enemies scream as they fall or are set on fire

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

ME2: Complete 5 missions discovered by scanning unexplored worlds

ME2: Complete a mission discovered by scanning an unexplored world

ME2: Fully upgrade a weapon

ME2: Evolve any power

ME2: Gain the loyalty of the thief

ME2: Confront the Shadow Broker