Complete all Star Doors.
Complete all Moon Doors.
Complete all Sun Doors.
Complete "Who Wants to Be a Mirannaire?" Maniac mode.
Complete all minigames on any difficulty.
Defeat all Abyss fiends.
Read all of the books in the Garden.
Finish the game on Easy or above.
Finish the game on Normal or above.
Finish the game on Hard or above.
Finish the game on Nightmare.
Carefully examine nearly every chest that you come across before the final chapter.
