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