Star Soldier Boss On Parade mode
Successfully complete the game to unlock Boss On Parade mode.
Level select
Successfully complete Boss On Parade mode.
God mode
Successfully complete level 10 on the Hard difficulty setting to unlock the God difficulty setting.
Sound test
Get a high score in Normal, 2-Minute, and 5-Minute modes with all three ships to unlock the sound test option.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original