Perform any combination of 50 biotic combos or tech bursts.
Kill 1,000 enemies.
Defeat an old adversary.
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.
Call down an orbital strike.
Complete three multiplayer matches or five N7 missions.
Disable a group of fighter squadrons.
Sabotage a dreadnought.
Discover an enemy's monstrous origin.
Evacuate a scientific facility.
Win a political stand-off.
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.
Set 100 enemies on fire with powers.
Destroy an Atlas dropped from orbit.
Lift 100 enemies off the ground with powers.
Dispatch 10 probes to retrieve people or resources in Reaper territory.
Bring a veteran officer aboard.
Kill a brute while it's charging you.
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.
Evolve any of your powers to rank 6.
Start a character in multiplayer or customize a character in single-player.
Perform your first Hack successfully.
Continue playing to unlock this secret achievement.
Perform your first Takedown. Civilians don't count, so be nice.
Open your first pack in FIFA 12 Ultimate Team
Create your FIFA 12 Ultimate Team club
Earn 1 star in Special Ops Mission Mode.
Complete "Glory of the Dead"
Complete "Diplomatic Immunity"
Learn all three words of a shout
Start the Single Player Campaign on any difficulty.
Complete "The Way of the Voice"
Become a member of the Circle
Reach Level 5
Join the Companions
Absorb a dragon soul
Complete "Bleak Falls Barrow"
Complete "Unbound"
