Free Omega from Cerberus occupation.

Reach level 15 in multiplayer or level 50 in single-player.

Rescue a civilian from Reaper forces.

Discover an enemy's monstrous origin.

Win a political stand-off.

Explore a lost city.

Defeat a Harvester.

Complete one multiplayer match or two N7 missions.

Destroy an Atlas dropped from orbit.

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

Perform any combination of 50 biotic combos or tech bursts.

Set 100 enemies on fire with powers.

Escape a Reaper in the galaxy map.