PS2 | Submitted by GamesRadarUnlock Premium Box
Beat the game with any difficulty level.
PS2 | Submitted by GamesRadarGame Mode Unlockables
Complete the game to unlock: Adventure "Review" Mode, Battle "Review" Mode, and the Movie Viewer
PS2 | Submitted by GamesRadarUnlock Master Fighter Mode
Play the extra Battle Review Mode and get "S" Rank in all 50 missions. This mode will give you infinite heat gauge.
PS2 | Submitted by GamesRadarSecret Boss
If you complete all the side quests, there will be a secret boss in front of the movie theater.
PS2 | Submitted by GamesRadarSecret Weapon Room
If you pay 30,000 yen to a man on E. Taihei Blvd., you'll get a secret password - tell it to the clerk at Beam Video Store (N. Pink St.), and he'll lead you to a secret weapons room.