ME3: Disable a group of fighter squadrons.

ME3: Free Omega from Cerberus Occupation.

ME3: Evacuate a scientific facility.

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

ME3: Explore a lost city.

ME3: Lift 100 enemies off the ground with powers.

ME3: Destroy an Atlas dropped from orbit.

ME3: Stop a Cerberus kidnapping.

ME3: Bring a veteran officer aboard.

ME3: Kill a brute while it's charging you.

ME3: Escape a Reaper in the galaxy map.

ME3: Modify a weapon.

ME3: Chase down an assassin.