Finish all multiplayer maps or all N7 missions in single-player.
Stop a Cerberus kidnapping.
Bring a veteran officer aboard.
Upgrade any weapon to level 10.
Kill 5,000 enemies.
Overload the shields of 100 enemies.
Kill 10 guardians with headshots from the front while their shields are raised.
Complete three multiplayer matches or five N7 missions.
Attain the highest level of readiness in each theater of war.
Visit a store in the single-player campaign.
Chase down an assassin.
Kill 1,000 enemies.
Promote a multiplayer character to the Galaxy at War or import an ME3 character.
Evolve any of your powers to rank 6.
Reach level 20 in multiplayer or level 60 in single-player.
Perform any combination of 50 biotic combos or tech bursts.
Complete one multiplayer match or two N7 missions.
Kill 100 enemies with melee attacks.
Kill 250 enemies.
Set 100 enemies on fire with powers.
Kill a brute while it's charging you.
Reach level 15 in multiplayer or level 50 in single-player.
Lift 100 enemies off the ground with powers.
Modify a weapon.
Return to active duty.
Start a character in multiplayer or customize a character in single-player.
Destroy an Atlas dropped from orbit.
Explore a lost city.
Survive the swarm.
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.
Make the final assault.
Mission accomplished.
Deliver most of the Galaxy at War assets to the final conflict.
Dispatch 10 probes to retrieve people or resources in Reaper territory.
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.
Escape a Reaper in the galaxy map.
Hijack an Atlas mech.
Defeat a harvester.
Obtain two non-customizable suits of armor.
Finish all multiplayer maps on Gold or all single-player missions on Insanity.
Find all required intel to help Eden Prime's colonists.
Learn more about the Prothean Empire.
Investigate a sinister conspiracy.
Uncover an ancient secret.
Use clues to pinpoint the exact location of an objective.
Rescue a civilian from Reaper forces.
Free Omega from Cerberus Occupation.
Find the Talon leader.
Complete all the Command Center side-missions on Omega.
Discover a plot against you.
Go undercover to follow a lead.
Infiltrate an enemy stronghold with your crew.
Stop an out-of-control scheme before it's too late.
Throw a party for your friends.
Win a prize at one of the arcade games.
Investigate a strange occurrence in the combat simulator.
Score 9999 points in the combat simulator on Normal, Hardcore, or Insanity.
Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.
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