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