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