WhiteOut Cheat mode
At the main menu, hold L + R and press Right(4) to unlock all tracks, characters, and snowmobiles.
All tracks
At the main menu, hold L + R and press Up(4).
All characters
At the main menu, hold L + R and press Down(4).
All parts
At the main menu, hold L + R and press Left(4).
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original