Win a multiplayer match.
Complete Confounding Light with more than 3 turns left on the timer.
Beat the game on any difficulty.
Have a soldier survive every mission in a full game.
Take your new ally into the final challenge.
Make contact with the Ethereal hive mind.
In a single game, shoot down one of each alien craft.
In a single game, complete every Foundry project.
Kill 500 aliens.
Staff the Research Labs with 80 scientists.
Mind Control an Ethereal. Single player only.
Staff the Engineering Department with 80 engineers
Find a soldier with the Gift.
Cure poison on five soldiers in a single mission. Single player only.
Build the Gollop Chamber.
In a single game, complete every Autopsy.
Kill an alien while flying. Single player only.
Successfully assault an Overseer UFO.
Earn the "Excellent" rating in every performance category on a terror mission.
Kill 50 aliens with explosive weapons.
Acquire 1000 credits in one month.
Build a S.H.I.V.
Build a suit of powered armor.
Build a Firestorm.
Get satellite coverage over every country on one continent.
Complete Gangplank.
Complete Confounding Light.
Complete Friends in Low Places.
Kill 150 aliens.
Build the Hyperwave Relay.
Advance one of your soldiers to Colonel rank.
Recover the Hyperwave Beacon.
Uncover the alien base's location.
Stun an Outsider.
Capture a live alien.
Gain access to the lowest level in your base.
Build a Workshop.
Fulfill a Council request.
Build a Laboratory.
Build a base facility.
Shoot down a UFO.
Launch a Satellite.
Build an item.
Complete a Research Project.
Complete a mission without losing a soldier.
Complete the tutorial mission.
Beat the game in Ironman mode on Classic or Impossible difficulty.
Beat the game on Classic difficulty.
Beat the game on Impossible difficulty.
Clear a UFO crash site with one soldier on Classic or Impossible difficulty.
Shoot down 40 UFOs.
In a single game, complete every Research Project.
Complete a Very Hard abduction mission in five turns or less on Classic or Impossible difficulty.
Win the game from each of the 5 starting locations.
Win a mission with an all-female squad. Single player only.
