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