Bring a veteran officer aboard.
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.
Stop a Cerberus kidnapping.
Evacuate a scientific facility.
Make the final assault.
Visit a store in the single-player campaign.
Master and Commander
Deliver most of the Galaxy at War assets to the final conflict.
Lost and Found
Dispatch 10 probes to retrieve people or resources in Reaper territory.
Long Service Medal
Complete Mass Effect 3 twice, or once with a Mass Effect 2 import.
Finish the game on Insanity without changing difficulty after leaving Earth.
A Personal Touch
Modify a weapon.
Establish or rekindle a romantic relationship.
Perform any combination of 50 biotic combos or tech bursts.
Evolve any of your powers to rank 6.
Kill 250 enemies.
Kill 1,000 enemies.
Kill 5,000 enemies.
Kill 100 enemies with melee attacks.
Escape a Reaper in the galaxy map.
Attain the highest level of readiness in each theater of war.
Overload the shields of 100 enemies.
Lift 100 enemies off the ground with powers.
Set 100 enemies on fire with powers.
Eye of the Hurricane
Kill a brute while it's charging you.
Kill 10 guardians with headshots from the front while their shields are raised.
Hijack an Atlas mech.
Defeat a harvester.
Start a character in multiplayer or customize a character in single-player.
Tour of Duty
Finish all multiplayer maps or all N7 missions in single-player.
Obtain two non-customizable suits of armor.
Complete one multiplayer match or two N7 missions.
Complete three multiplayer matches or five N7 missions.
Upgrade any weapon to level 10.
Reach level 15 in multiplayer or level 50 in single-player.
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.
Kill 25 enemies with melee attacks.
No Stone Unturned
Investigate a sinister conspiracy.
Rescue a civilian from Reaper forces.
Uncover an ancient secret.
Use clues to pinpoint the exact location of an objective.
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.
King of the Castle
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.
The One and Only
Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.