Tofu mode:
To unlock Tofu mode, beat Operation Javier –
Chapter 5 on Normal. It will become available in the “Secret” option
located in the bottom right corner of the main menu.
Unlockable Difficulties:
To unlock Very Easy difficulty, beat the game 10 times on Easy.
To unlock Very Hard difficulty, beat the game on Hard.
Krauser Bonus scenarios:
To unlock the Krauser Bonus scenarios, beat Operation Javier – Chapter 7 in less than 10 minutes.
Operation Javier: Chapters 6