Extract ancient technology.
Call down an orbital strike.
Kill 10 guardians with headshots from the front while their shields are raised.
Obtain two non-customizable suits of armor.
Visit a store in the single-player campaign.
Finish all multiplayer maps or all N7 missions in single-player.
Kill 1,000 enemies.
Sabotage a dreadnought.
Perform any combination of 50 biotic combos or tech bursts.
Reach level 15 in multiplayer or level 50 in single-player.
Survive the swarm.
Complete three multiplayer matches or five N7 missions.
Set 100 enemies on fire with powers.
Win a political stand-off.
Explore a lost city.
Defeat a harvester.
Modify a weapon.
Complete one multiplayer match or two N7 missions.
Kill 250 enemies.
Destroy an Atlas dropped from orbit.
Lift 100 enemies off the ground with powers.
Escape a Reaper in the galaxy map.
Bring a veteran officer aboard.
Kill a brute while it's charging you.
Chase down an assassin.
Evolve any of your powers to rank 6.
Return to active duty.
Start a character in multiplayer or customize a character in single-player.
Disable a group of fighter squadrons.
Defeat an old adversary.
Send a warning across the galaxy.
Discover an enemy's monstrous origin.
Stop a Cerberus kidnapping.
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.
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.
Upgrade any weapon to level 10.
Reach level 20 in multiplayer or level 60 in single-player.
Promote a multiplayer character to the Galaxy at War or import an ME3 character.
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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