Defeat a harvester.
Complete one multiplayer match or two N7 missions.
Survive the swarm.
Perform any combination of 50 biotic combos or tech bursts.
Destroy an Atlas dropped from orbit.
Dispatch 10 probes to retrieve people or resources in Reaper territory.
Stop a Cerberus kidnapping.
Kill 10 guardians with headshots from the front while their shields are raised.
Kill 250 enemies.
Escape a Reaper in the galaxy map.
Set 100 enemies on fire with powers.
Bring a veteran officer aboard.
Kill a brute while it's charging you.
Modify a weapon.
Visit a store in the single-player campaign.
Chase down an assassin.
Return to active duty.
Evolve any of your powers to rank 6.
Rescue a civilian from Reaper forces.
Promote a multiplayer character to the Galaxy at War or import an ME3 character.
Score 9999 points in the combat simulator on Normal, Hardcore, or Insanity.
Upgrade any weapon to level 10.
Investigate a strange occurrence in the combat simulator.
Win a prize at one of the arcade games.
Throw a party for your friends.
Stop an out-of-control scheme before it's too late.
Reach level 15 in multiplayer or level 50 in single-player.
Reach level 20 in multiplayer or level 60 in single-player.
Infiltrate an enemy stronghold with your crew.
Finish all multiplayer maps on Gold or all single-player missions on Insanity.
Free Omega from Cerberus Occupation.
Find all required intel to help Eden Prime's colonists.
Go undercover to follow a lead.
Discover a plot against you.
Learn more about the Prothean Empire.
Complete all the Command Center side-missions on Omega.
Investigate a sinister conspiracy.
Uncover an ancient secret.
Find the Talon leader.
Use clues to pinpoint the exact location of an objective.
Complete three multiplayer matches or five N7 missions.
Lift 100 enemies off the ground with powers.
Obtain two non-customizable suits of armor.
Make the final assault.
Explore a lost city.
Sabotage a dreadnought.
Call down an orbital strike.
Disable a group of fighter squadrons.
Win a political stand-off.
Extract ancient technology.
Defeat an old adversary.
Send a warning across the galaxy.
Discover an enemy's monstrous origin.
Evacuate a scientific facility.
Mission accomplished.
Finish all multiplayer maps or all N7 missions in single-player.
Deliver most of the Galaxy at War assets to the final conflict.
Complete Mass Effect 3 twice, or once with a Mass Effect 2 import.
Finish the game on Insanity without changing difficulty after leaving Earth.
Establish or rekindle a romantic relationship.
Kill 1,000 enemies.
Kill 5,000 enemies.
Kill 100 enemies with melee attacks.
Attain the highest level of readiness in each theater of war.
Overload the shields of 100 enemies.
Hijack an Atlas mech.
Start a character in multiplayer or customize a character in single-player.
Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.
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