Investigate a strange occurrence in the combat simulator.
Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.
Score 9999 points in the combat simulator on Normal, Hardcore, or Insanity.
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.
Complete all the Command Center side-missions on Omega.
Find the Talon leader.
Uncover an ancient secret.
Rescue a civilian from Reaper forces.
Investigate a sinister conspiracy.
Acquire all trophies.
Finish all multiplayer maps on Gold or all single-player missions on Insanity.
Kill 5,000 enemies.
Complete Mass Effect 3 twice, or once with a Mass Effect 2 import.
Use clues to pinpoint the exact location of an objective.
Deliver most of the Galaxy at War assets to the final conflict.
Finish the game on Insanity without changing difficulty after leaving Earth.
Establish or rekindle a romantic relationship.
Stop a Cerberus kidnapping.
Upgrade any weapon to level 10.
Dispatch 10 probes to retrieve people or resources in Reaper territory.
Perform any combination of 50 biotic combos or tech bursts.
Overload the shields of 100 enemies.
Reach level 20 in multiplayer or level 60 in single-player.
Attain the highest level of readiness in each theater of war.
Reach level 15 in multiplayer or level 50 in single-player.
Set 100 enemies on fire with powers.
Lift 100 enemies off the ground with powers.
Promote a multiplayer character to the Galaxy at War or import an ME3 character.
Mission accomplished.
Make the final assault.
Kill a brute while it's charging you.
Kill 1,000 enemies.
Defeat an old adversary.
Send a warning across the galaxy.
Evacuate a scientific facility.
Discover an enemy's monstrous origin.
Escape a Reaper in the galaxy map.
Finish all multiplayer maps or all N7 missions in single-player.
Evolve any of your powers to rank 6.
Extract ancient technology.
Call down an orbital strike.
Disable a group of fighter squadrons.
Complete three multiplayer matches or five N7 missions.
Sabotage a dreadnought.
Learn more about the Prothean Empire.
Kill 10 guardians with headshots from the front while their shields are raised.
Find all required intel to help Eden Prime's colonists.
Obtain two non-customizable suits of armor.
Win a political stand-off.
Hijack an Atlas mech.
Survive the swarm.
Explore a lost city.
Complete one multiplayer match or two N7 missions.
Defeat a Harvester.
Kill 100 enemies with melee attacks.
Kill 250 enemies.
Destroy an Atlas dropped from orbit.
Bring a veteran officer aboard.
Visit a store in the single-player campaign.
Modify a weapon.
Start a character in multiplayer or customize a character in single-player.
Chase down an assassin.
Return to active duty.
