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