Full list of all 12 Guardian Heroes achievements worth 200 gamerscore. It takes around 8-10 hours to unlock all of the achievements on Xbox 360.
Unlock all characters in Story Mode.
Watch all the endings in Story Mode.
Find the Coliseum in Story Mode.
Defeat Golden Silver in Story Mode.
Defeat the Sky Spirit in Story Mode.
Give the Undead Hero a command in Story Mode.
Defeat Kanon in Story Mode.
Defeat Valgar in Story Mode.
Defeat Super Zur in Story Mode.
Defeat the Great Earth Spirit in Story Mode.
Finish Story Mode in any difficulty.
Finish Story Mode in Hard Mode without using any continues.