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