Here is the full list of all 22 Centauri Sector achievements.
A Unknown Pirate Patrol is destroyed
Reach the rank of Lieutenant
Acquire an escort ship
Complete the first ground mission
Participate in the defense of a space station
Complete 10 missions in a row
Lose your fleet
Lose the game
Check out the credits page
Submit a Bug/Feedback
Acquire 5000 prestige
Reach the rank of Lt.Commander
Reach the rank of Commander
Lose your fleet 3 times in a row
100 Pirate ships destroyed
Acquire 10000 prestige
Acquire a Destroyer
Complete the second ground mission
Complete the third ground mission
Complete the fourth ground mission
Acquire 2 escort ships
Win the game