Secrets
Special Hero Units
By manually changing the name(s) of your field agents, you can give them added bonuses and abilities: - Sid Meyer (Support) - Otto Zander (Assault) - Joe Kelly (Heavy) - Ken Levine (Sniper) WARNING: Using this name-enhancing easter-egg/secret will disable Achievements.
Achievements
No Looking Back 100 Beat the game in Ironman mode on Classic or Impossible difficulty.
- All Aboard (30) - Complete Confounding Light with more than 3 turns left on the timer.
- Bait the Hook (10) - Complete Confounding Light.
- New Friend (10) - Complete Friends in Low Places.
- Rising Dragon (30) - Take your new ally into the final challenge.
- The Bigger They Are (20) - Complete Gangplank.
- Humanity's Savior 30 Beat the game on any difficulty.
- Earth First 60 Beat the game on Classic difficulty.
- Our Finest Hour 90 Beat the game on Impossible difficulty.
- Lone Wolf 20 Clear a UFO crash site with one soldier on Classic or Impossible difficulty.
- Bada Boom 10 Kill 50 aliens with explosive weapons.
- Welcoming Committee 20 Kill 150 aliens.
- Pale Horse 50 Kill 500 aliens.
- Shooting Stars 35 Shoot down 40 UFOs.
- Ain't No Cavalry Comin' 50 Have a soldier survive every mission in a full game.
- As A Scalpel 25 Earn the "Excellent" rating in every performance category on a terror mission.
- Edison 25 In a single game, complete every Research Project.
- All Employees Must Wash Hands... 10 In a single game, complete every Autopsy.
- Eye in the Sky 5 Launch a Satellite.
- All Together Now 10 Get satellite coverage over every country on one continent.
- Hunter/Killer 15 In a single game, shoot down one of each alien craft.
- Man No More 10 Build a suit of powered armor.
- We Happy Few 10 Complete a mission without losing a soldier.
- The Hardest Road 10 Advance one of your soldiers to Colonel rank.
- Worth Every Penny 20 Acquire 1000 credits in one month.
- Oppenheimer 20 Staff the Research Labs with 80 scientists.
- One Gun at a Time 20 Staff the Engineering Department with 80 engineers
- Skunkworks 20 In a single game, complete every Foundry project.
- You Have 5 Seconds to Comply 10 Build a S.H.I.V.
- Theory... 10 Build a Laboratory.
- ...and Practice 10 Build a Workshop.
- Wet Work 10 Complete a Very Hard abduction mission in five turns or less on Classic or Impossible difficulty.
- A Continental Fellow 50 Win the game from each of the 5 starting locations.
- What Wonders Await 5 Complete a Research Project.
- Up and Running 5 Build a base facility.
- Combat Ready 5 Build an item.
- Drums in the Deep 10 Gain access to the lowest level in your base.
- Happy to Oblige 15 Fulfill a Council request.
- Tables Turned 10 Shoot down a UFO.
- And So It Begins... 15 Complete the tutorial mission.