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.
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.
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.
Use clues to pinpoint the exact location of an objective.
Kill 5,000 enemies.
Upgrade any weapon to level 10.
Promote a multiplayer character to the Galaxy at War or import an ME3 character.
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 Mass Effect 3 twice, or once with a Mass Effect 2 import.
Mission accomplished.
Make the final assault.
Defeat an old adversary.
Deliver most of the Galaxy at War assets to the final conflict.
Attain the highest level of readiness in each theater of war.
Reach level 20 in multiplayer or level 60 in single-player.
Overload the shields of 100 enemies.
Start a character in multiplayer or customize a character in single-player.
Send a warning across the galaxy.
Finish all multiplayer maps or all N7 missions in single-player.
Extract ancient technology.
Call down an orbital strike.
Dispatch 10 probes to retrieve people or resources in Reaper territory.
Disable a group of fighter squadrons.
Complete three multiplayer matches or five N7 missions.
Sabotage a dreadnought.
Evacuate a scientific facility.
Reach level 15 in multiplayer or level 50 in single-player.
Establish or rekindle a romantic relationship.
Discover an enemy's monstrous origin.
Win a political stand-off.
Kill 1,000 enemies.
Explore a lost city.
Defeat a harvester.
Complete one multiplayer match or two N7 missions.
Survive the swarm.
Destroy an Atlas dropped from orbit.
Obtain two non-customizable suits of armor.
Stop a Cerberus kidnapping.
Bring a veteran officer aboard.
Perform any combination of 50 biotic combos or tech bursts.
Kill 100 enemies with melee attacks.
Kill a brute while it's charging you.
Kill 250 enemies.
Lift 100 enemies off the ground with powers.
Escape a Reaper in the galaxy map.
Learn more about the Prothean Empire.
Hijack an Atlas mech.
Kill 10 guardians with headshots from the front while their shields are raised.
Find all required intel to help Eden Prime's colonists.
Modify a weapon.
Visit a store in the single-player campaign.
Chase down an assassin.
Evolve any of your powers to rank 6.
Set 100 enemies on fire with powers.
Return to active duty.
