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