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