Here is the full list of all 10 Pilam Sky achievements.
All rooms are unloked
Pirate base are found by your spy
All improvements for trade room.
All improvements for armory room.
All improvements for pike's workshop.
All improvements for anchor's workshop.
Kill the enemy with special attack.
Finish the game as Chunise pilot.
Finish the game as Gussian pilot.
Finish the game as Beermanian pilot.