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