Get an "S" rank in all fifty missions in Battle Review mode. Master Fighter mode features an unlimited heat gauge.
Beat the game with any difficulty level.
Successfully complete the game to unlock the Premium Box, Adventure Review mode, Battle Review mode, and Movie Viewer.
Successfully complete all the side quests. Talk to the Boss that appears in front of the movie theater to begin another battle.
On very first stage they will teach all the moves well your enemys will neer die when youre trying to learn a move.
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.