Dural character - To obtain the Dural character (who is encountered at the Bonus Stage after Arcade mode is finished) beat Arcade mode with all seventeen characters. Difficulty levels and the number of continues used to beat Arcade mode do not apply.
Character C costume - Get your character's ranking to 1st Dan in Quest mode.
Character D costume - Complete your character's first Orb in Quest mode.
Alternate introduction movie sequence - Unlock the character Dural. The introduction movie will alter slightly, most noteably presenting characters in their B costumes.
Unlock Arcade Mode Route B: At the 'Character Selection' screen in Arcade mode hold 'Guard' or 'Punch' at the 'Yes' or 'No' prompt. Keep the button pressed and don't release it until the match begins. The fighters will then appear in a different order.
Unlock Dojo Training Stages: In Command Training complete Time Attack mode and select Versus mode. Select the fighters and press Down, Down for the fenced Dojo stage or Up, Up for the fence-less Dojo stage.
Unlock VF2 Saturn Watch Mode: At the 'Character' select screen choose 'VF. TV Exhibition Match' and while holding L1 + R1 pressed down press X.