Full list of all 43 Blue Dragon achievements worth 1,000 gamerscore. It takes around 80-100 hours to unlock all of the achievements on Xbox 360.
You filled out the entire Item Record.
You defeated every type of monster to complete the Monster Record.
You defeated the rare monster King Poo.
You defeated the rare monster Gold Mecha Robo.
You activated all of the Warp Devices.
You made all of your characters level 99.
You removed all barriers in the game.
You cleared Mechat Shooting Stage 3 with no damage.
You got the rare Dragon Bracelet.
You got all of the dragon items.
You achieved the highest rank for all classes of the Killer Bat Shadow.
You achieved the highest rank for all classes of the Phoenix Shadow.
You achieved the highest rank for all classes of the Saber-Tooth Shadow.
You achieved the highest rank for all classes of the Minotaur Shadow.
You achieved the highest rank for all classes of the Dragon Shadow.
You got all of the mechat part types and completed all enhancements.
You got the rare Final War Necklace.
You got the rare Ultimate Weapon Bracelet.
You destroyed all the mechat base machine guns in Mechat Shooting Stage 2.
You got 1,000,000 Gold.
You achieved the highest rank for one class of the Minotaur Shadow.
You caused 100 Monster Fights.
You achieved the highest rank for one class of the Killer Bat Shadow.
You achieved the highest rank for one class of the Dragon Shadow.
You defeated the rare monster Golden Poo Snake.
You achieved the highest rank for one class of the Phoenix Shadow.
You saved Kluke from being choked by Nene's collar.
You escaped without being stomped by the Squashtrich.
You got a bonus for completing the Moon Laser perfectly.
You rescued Kluke without falling.
You fled from battle more than 50 times.
You were ambushed more than 50 times.
You achieved the highest rank for one class of the Saber-Tooth Shadow.
You won a Multi-Monster Encounter against 10 or more monsters.
You cleared Mechat Shooting Stage 1 with no damage.
You helped pull in the Flying Fortress without angering the Gorgo giants.
You completed the wagon escort with no damage to the wagon.
You closed the Flying Fortress door without fighting the mecha robos.
You summoned Shu's Shadow.
You arrived at Nene's location before the time bomb went off.
You completed 100 Back Attacks.
You won a Multi-Monster Encounter.
You completed a Back Attack.