Win a multiplayer match.
Beat the game in Ironman mode on Classic or Impossible Difficulty.
Mind Control an Ethereal. Single player only.
Beat the game on any difficulty.
Beat the game on Classic difficulty.
Clear a UFO crash site with one soldier on Classic or Impossible.
Beat the game on Impossible difficulty.
Kill 50 aliens with explosive weapons.
Kill 150 aliens.
Shoot down 40 UFOs.
Kill 500 aliens.
Have a soldier survive every mission in a full game.
Earn "Excellent" rating in every category on a terror mission.
Kill an alien while flying. Single player only.
In a single game, complete every Research Project.
In a single game, complete every Autopsy.
Find a soldier with the Gift.
Stun an Outsider.
Capture a live alien.
Uncover the alien base's location.
Build the Hyperwave Relay.
Build a Firestorm.
Build the Gollop Chamber.
Launch a Satellite.
Get satellite coverage over every country on one continent.
Build a suit of powered armor.
In a single game, shoot down one of each alien craft.
Complete a mission without losing a soldier.
Advance one of your soldiers to Colonel rank.
Acquire 1000 credits in one month.
Staff the Research Labs with 80 scientists.
In a single game, complete every Foundry project.
Staff the Engineering Department with 80 engineers.
Build a S.H.I.V.
Build a Laboratory.
Win a v. Hard abduction within 5 turns on Classic or Impossible.
Build a Workshop.
Win the game from each of the 5 starting locations.
Complete a Research Project.
Build an item.
Build a base facility.
Gain access to the lowest level in your base.
Fulfill a Council request.
Recover the Hyperwave Beacon.
Successfully assault an Overseer UFO.
Shoot down a UFO.
Complete the tutorial mission.
Win a mission with an all-female squad. Single player only.
Make contact with the Ethereal hive mind.