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