Here is the full list of all 53 STAR OCEAN THE DIVINE FORCE achievements.
Complete at least 90% of the Bestiary
Defeated the all-powerful Gabriel Celeste
Raymond and Albaird thereafter
Saved the cosmos from peril
Flew over 100 km
Basked in the light of hope
Peered into the darkness of the Pangalactic Federation
Arrived in Parrapoeiam
Defeated over 3,000 foes
Depart from Aster at last
Allowed Emperor Bohld'or to escape
Burst into the wedding and carried out the rescue
Tomorrow is the day to launch a major operation
Laeticia said “yes”
Reunited with friends
Walked over 100 km
Arrived at the Ancient Coil
Surprisingly endured a crushing defeat in Baldaar
Found Dillwhip
Launched 100 Surprise Attacks
Met Theo in the town of Cotto
Recruited Midas to join your party
Won a game of Es'owa for the first time
Entered the village of Eda after a rough welcome
Used Item Creation for the first time
Recruited Nina to join your party
Defeated the colossus of the Mhedume Ruins
Raymond and Nina thereafter
Raymond and Midas thereafter
Raymond and Elena thereafter
Raymond and Marielle thereafter
Raymond and Malkya thereafter
Raymond and J.J. thereafter
Laeticia and Albaird thereafter
Laeticia and Nina thereafter
Laeticia and Midas thereafter
Laeticia and Elena thereafter
Laeticia and Marielle thereafter
Laeticia and Theo thereafter
Laeticia and Malkya thereafter
Clear 55 quests or more
Performed 200 Blindsides
Obtain at least 90% of all weapons
Opened all treasure chests in the universe
Found every mini-bunny
Acquired the rank of Battle God
Watched every ending
Defeated the mighty Ethereal Queen
Beat the game on Universe difficulty
Beat the game on Chaos difficulty
Make at least 90% of all items in Item Creation
Raymond and Laeticia, and beyond
Laeticia and Raymond, and beyond