| Achievement | How to unlock
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|---|
| Air Superiority | Have an interceptor shoot down 20 UFOs.
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| All Your Base | Capture the Cleaner facility.
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| Commander Victory | Win the campaign on Commander difficulty.
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| Counterfire | Kill an alien with reaction fire during a tactical combat mission.
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| Expansionist | Construct an additional base on the Geoscape.
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| First Contact | Kill an alien in a tactical combat mission.
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| First Of Many | Lose a soldier in a tactical combat mission.
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| Future Warfare | Kill an alien with an energy weapon.
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| God Of War | Have a soldier with 20 alien kills.
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| Maximum Power | Have a soldier achieve the rank of Colonel.
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| Recruit Victory | Win the campaign on Recruit difficulty or higher.
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| Soldier Victory | Win the campaign on Soldier difficulty or higher.
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| Stunning Work | Cause an enemy unit to fall unconscious.
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| Sunk My Battleship | Shoot down a Battleship UFO with an interceptor.
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| Ultimate Power | Deploy a squad consisting entirely of Colonels on a tactical mission.
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| Unfriendly Fire | Kill one of your own soldiers during a tactical combat mission.
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| Veteran Victory | Win the campaign on Veteran difficulty or higher.
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| War Machine | Equip a soldier with a Colossus Battlesuit.
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| Welcome To Earth | Shoot down a UFO with an interceptor.
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| Xenonaut | Set foot upon the alien homeworld.
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