Here is the full list of all 51 Crystal Project achievements.
Beat the game.
Teleport to an unknown world.
Master the Monk class.
Master the Weaver class.
Master the Beatsmith class.
Master the Beastmaster class.
Breed a Golden Quintar.
Master the Mimic class.
Discover every Crystal.
Acquire a Summon.
Master the Assassin class.
Have a party member reach max level.
Master the Chemist class.
Master the Samurai class.
Master the Valkyrie class.
Obtain an Owl companion.
Discover 12 Crystals.
Master the Nomad class.
Master the Dervish class.
Master the Ninja class.
Master the Reaper class.
Master the Shaman class.
Master the Hunter class.
Master the Warlock class.
Change a party member's name.
Obtain an Ibek companion.
Master the Aegis class.
Teleport to a far away land.
Obtain a Salmon companion.
Obtain a Quintar companion.
Defeat 5 boss flames.
Discover 7 Crystals.
Master the Rogue class.
Master the Wizard class.
Master the Cleric class.
Learn a Monster Magic spell.
Master the Warrior class.
Open 100 treasure chests.
Conquer the trials.
Discover 3 Crystals.
Open 50 treasure chests.
Defeat a boss flame.
Defeat 25 boss flames.
Learn every Monster Magic spell.
Acquire every Summon.
Change a party member's gender.
Open 500 treasure chests.
Beat the game's secret last boss.
Master the Fencer class.
Master the Scholar class.
Master the Summoner class.