Mass Effect 3

Return to active duty.

LockedSteam

Chase down an assassin.

LockedSteam

Bring a veteran officer aboard.

LockedSteam

Destroy an Atlas dropped from orbit.

LockedSteam

Explore a lost city.

LockedSteam

Survive the swarm.

LockedSteam

Sabotage a dreadnought.

LockedSteam

Call down an orbital strike.

LockedSteam

Disable a group of fighter squadrons.

LockedSteam

Win a political stand-off.

LockedSteam

Extract ancient technology.

LockedSteam

Defeat an old adversary.

LockedSteam

Send a warning across the galaxy.

LockedSteam

Discover an enemy's monstrous origin.

LockedSteam

Stop a Cerberus kidnapping.

LockedSteam

Evacuate a scientific facility.

LockedSteam

Make the final assault.

LockedSteam

Mission accomplished.

LockedSteam

Visit a store in the single-player campaign.

LockedSteam

Deliver most of the Galaxy at War assets to the final conflict.

LockedSteam

Dispatch 10 probes to retrieve people or resources in Reaper territory.

LockedSteam

Complete Mass Effect 3 twice, or once with a Mass Effect 2 import.

LockedSteam

Finish the game on Insanity without changing difficulty after leaving Earth.

LockedSteam

Modify a weapon.

LockedSteam

Establish or rekindle a romantic relationship.

LockedSteam

Perform any combination of 50 biotic combos or tech bursts.

LockedSteam

Evolve any of your powers to rank 6.

LockedSteam

Kill 250 enemies.

LockedSteam

Kill 1,000 enemies.

LockedSteam

Kill 5,000 enemies.

LockedSteam

Kill 100 enemies with melee attacks.

LockedSteam

Escape a Reaper in the galaxy map.

LockedSteam

Attain the highest level of readiness in each theater of war.

LockedSteam

Overload the shields of 100 enemies.

LockedSteam

Lift 100 enemies off the ground with powers.

LockedSteam

Set 100 enemies on fire with powers.

LockedSteam

Kill a brute while it's charging you.

LockedSteam

Kill 10 guardians with headshots from the front while their shields are raised.

LockedSteam

Hijack an Atlas mech.

LockedSteam

Defeat a harvester.

LockedSteam

Start a character in multiplayer or customize a character in single-player.

LockedSteam

Finish all multiplayer maps or all N7 missions in single-player.

LockedSteam

Obtain two non-customizable suits of armor.

LockedSteam

Complete one multiplayer match or two N7 missions.

LockedSteam

Complete three multiplayer matches or five N7 missions.

LockedSteam

Upgrade any weapon to level 10.

LockedSteam

Reach level 15 in multiplayer or level 50 in single-player.

LockedSteam

Reach level 20 in multiplayer or level 60 in single-player.

LockedSteam

Promote a multiplayer character to the Galaxy at War or import an ME3 character.

LockedSteam

Finish all multiplayer maps on Gold or all single-player missions on Insanity.

LockedSteam

Find all required intel to help Eden Prime's colonists.

LockedSteam

Learn more about the Prothean Empire.

LockedSteam

Investigate a sinister conspiracy.

LockedSteam

Uncover an ancient secret.

LockedSteam

Use clues to pinpoint the exact location of an objective.

LockedSteam

Rescue a civilian from Reaper forces.

LockedSteam

Free Omega from Cerberus Occupation.

LockedSteam

Find the Talon leader.

LockedSteam

Complete all the Command Center side-missions on Omega.

LockedSteam

Discover a plot against you.

LockedSteam

Go undercover to follow a lead.

LockedSteam

Infiltrate an enemy stronghold with your crew.

LockedSteam

Stop an out-of-control scheme before it's too late.

LockedSteam

Throw a party for your friends.

LockedSteam

Win a prize at one of the arcade games.

LockedSteam

Investigate a strange occurrence in the combat simulator.

LockedSteam

Score 9999 points in the combat simulator on Normal, Hardcore, or Insanity.

LockedSteam

Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.

LockedSteam