Beat the game on any difficulty.
Kill 500 aliens.
Staff the Engineering Department with 80 engineers
Staff the Research Labs with 80 scientists.
Gain access to the lowest level in your base.
In a single game, complete every Autopsy.
Acquire 1000 credits in one month.
Earn the "Excellent" rating in every performance category on a terror mission.
Build a suit of powered armor.
Build a Workshop.
Kill 150 aliens.
Advance one of your soldiers to Colonel rank.
Fulfill a Council request.
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.
Kill 50 aliens with explosive weapons.
Shoot down 40 UFOs.
Have a soldier survive every mission in a full game.
In a single game, complete every Research Project.
Get satellite coverage over every country on one continent.
In a single game, shoot down one of each alien craft.
In a single game, complete every Foundry project.
Build a S.H.I.V.
Build a Laboratory.
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.
Complete Friends in Low Places.
Complete Confounding Light.
Complete Gangplank.
Take your new ally into the final challenge.
Complete Confounding Light with more than 3 turns left on the timer.
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