ME3: Kill 10 guardians with headshots from the front while their shields are raised.

ME3: Perform any combination of 50 biotic combos or tech bursts.

ME3: Discover an enemy's monstrous origin.

ME3: Explore a lost city.

ME3: Destroy an Atlas dropped from orbit.

ME3: Bring a veteran officer aboard.

ME3: Dispatch 10 probes to retrieve people or resources in Reaper territory.

ME3: Set 100 enemies on fire with powers.

ME3: Visit a store on the Citadel.

ME3: Evolve any of your powers to rank 6.

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

ME2: Keep your team alive through the suicide mission

Complete two games in Mass Effect Legendary Edition on Insanity without changing difficulty