Connection bonus:
Have the Game Boy Advance game Yggdra Union inserted in the cartridge slot to have Yggdra as the host for the tutorials.
Play as Astart and Yggdra:
To unlock Astart and Yggdrafor play, complete the game. You can also unlock Yggdra by having a saved game file from Yggdra Union.
Unlockable Difficulties:
To unlock Hard difficulty, beat the game on Normal difficulty. To unlock Nightmare difficulty, beat the game on Hard difficulty.