ME3: Send a warning across the galaxy.

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

ME3: Disable a group of fighter squadrons.

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

ME3: Discover an enemy's monstrous origin.

ME3: Explore a lost city.

ME3: Obtain two non-customizable suits of armor.

ME3: Survive the swarm.

ME3: Free Omega from Cerberus Occupation.

ME3: Hijack an Atlas mech.

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

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

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