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