Here is the full list of all 18 Pon Para and the Great Southern Labyrinth achievements.
Keep Hetch safe and your mother alive.
Reach Mytele without risk of starvation.
Find the spy in Fort Ulgas.
Reach the Great Southern Labyrinth with time to spare.
Kill at least five intelligent foes in battle.
Find every clue about the Stormraiders.
Never suffer a serious wound or scar.
Never kill.
Train your allies and then use their advanced skills three or more times.
Complete all three burglaries for the Condors of Patabesh.
Master a skill.
End the story as a general.
End the story as a renowned and recognized sage.
End the story atop the apex of a temple hierarchy.
End the story as a master thief.
Romance the philosopher.
Romance the spy.
End the game with average scores in all personality traits.