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