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