ME3: Deliver most of the Galaxy at War assets to the final conflict.

ME3: Disable a group of fighter squadrons.

ME3: Sabotage a dreadnought.

ME3: Discover an enemy's monstrous origin.

ME3: Stop an out-of-control scheme before it's too late.

Establish or rekindle a romantic relationship in all three games in Mass Effect Legendary Edition

ME3: Explore a lost city.

ME3: Survive the swarm.

ME3: Defeat a harvester.

ME3: Destroy an Atlas dropped from orbit.

ME3: Free Omega from Cerberus Occupation.

ME3: Hijack an Atlas mech.