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