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