Here is the full list of all 69 Halcyon 6: Starbase Commander achievements.
Made an enemy of the Xlar-Yanthu.
Made an enemy of the Collective.
Killed the Chruul Behemoth.
Built a tier five ship.
Killed the Chruul Desolator.
Made an ally of the Yabblings.
Killed the Chruul Crusher.
Killed the Chruul Marauder.
Made an ally of the Collective.
Built a tier four ship.
Made an ally of the Korzan.
Made an ally of the Voraash.
Made an ally of the Xlar-Yanthu.
Killed the Chruul Chimera.
Successfully cleared a Chruul spire.
Lost 10 Green Shirts in ground combat.
Built a tier three ship.
Had an officer reach Level 10.
Researched 20 techs.
Recruit 10 officers.
Built 20 Base Rooms.
Made an alliance with the pirate Khut.
Destroyed 100 Chruul ships.
Researched 10 techs.
Defeated the Chruul at New Terra.
Destroyed the Chruul Spawn Pit.
Defeated Admirax Zeb and his pirates.
Built a tier two ship.
Built 10 Base Rooms.
Have a ship reach rank four or higher.
Rescue 5 colonies from a Chruul fleet.
Destroyed 25 Chruul ships.
Researched 5 techs.
Destroyed 25 pirate ships.
Made an alliance with the pirate Willa.
Had an officer reach Level 5.
Have a ship reach rank three.
Destroyed 10 pirate ships.
Destroyed 10 Chruul ships.
Have a ship reach rank two.
Successfully multiplied O'Brien.
Have a ship reach rank one.
Finished the tutorial.
Built 3 Base Rooms.
Lose your first Green Shirt in ground combat.
Had an officer reach Level 2.
Built a base room.
Built a tier one ship.
Lost 25 Green Shirts in ground combat.
Lost 50 Green Shirts in ground combat.
Lost 100 Green Shirts in ground combat.
Destroyed 100 pirate ships.
Made an enemy of the Yabblings.
Made an enemy of the Korzan.
Made an enemy of the Voraash.
Lost 10 officers in the line of duty.
Made an alliance with the pirate Savak.
Did not ally with any of the pirate captains.
Killed the Mothership.
Rescue 15 colonies from a Chruul fleet.
Rescue 30 colonies from a Chruul fleet.
Tried to give the station to pirates...seriously?
Decided to pay off the Yabbling debt for the next couple millennia.
Successfully beat the game on Cadet difficulty.
Successfully beat the game on Lieutenant difficulty.
Successfully beat the game on Commander difficulty.
Successfully beat the game on Captain difficulty.
Successfully beat the game on Admiral difficulty.
Successfully beat the game on Grand Admiral difficulty.