Hard Boiled Level select
At the text credits opening screen, hold Up + X + Start and select “Load Game”.
Fight level 2 Boss
Enable the “Level select” code. Then, hold L1 during the “Loading” screen.
Fight level 5 Boss
Enable the “Level select” code. Then, hold R1 during the “Loading” screen.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original