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