Finish all multiplayer maps or all N7 missions in single-player.

Extract ancient technology.

Call down an orbital strike.

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

Evacuate a scientific facility.

Learn more about the Prothean Empire.

Explore a lost city.

Complete one multiplayer match or two N7 missions.

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

Stop a Cerberus kidnapping.

Bring a veteran officer aboard.

Modify a weapon.

Chase down an assassin.