Inuyasha: Feudal Combat Cheats...
Challenging Mode
Beat mission mode three times using a different controlled character.
Miroku/Sango's Chapter
Complete Inuyasha's Chapter.
Sesshomaru's Chapter
Beat Miroku's/Sango's Chapter.
Sesshomaru's Chapter
Complete Miroku/Sango's Chapter.
Shippo's Chapter
Complete Sesshomaru's Chapter.
Unlock Bankotsu
Beat story mood with miroku.
Unlock Demon Inuyasha
Complete Sesshomaru's Chapter without losing.
Unlock Human inuyasha
Beat story mood with shippo.
Unlock Mad inuyasha
Beat story mood with sesshomaru.
Unlock Naraku
Beat story mood with inuyasha.
Unlock Secret Trailer
At the Menu Screen, hold L1+R1+Triangle. This will unlock the secret trailer at the menu and select it to play.
Unlock the Training Stage
Head to Practice Mode and destroy the 8 Pillars with all of the 14 characters to unlock the Training Stage.