Onimusha too hard for you? If you lose or purposely lose three times within an hour in Onimusha, a message will appear after the DIED bloody text saying that a Beginner level is now accessible, Easy mode is open. This code was used by me (SolidSnake), when I got stuck on a very, very tricky puzzle in the game.
Onimusha 2 FMV Sequences
Beat Onimusha once and save the game. After the ending choose the "New Game" mode and a "Special Report" option should be available. Go into it and view the sequence.
Funny Onimusha Secret Costume
Complete the game once, save and return to the New Game option. Go into the "Shinnosuke Normal/Special" menu and you will now place Samanosuke into a Panda suit.