Virtua Fighter 4
Change Main Menu background :
At the Game Options screen, press R1 or L1 to scroll through different backgrounds.
Play as Dural in VS. mode:
Beat Dural in Kumite mode.
Virtua Fighter 1 Costumes :
Fight in Kumite mode until a character reaches the rank of 1st Dan. Then select that fighter for a match and hold the punch and kick buttons until the fight starts.
Unlock Dural's Stage (Versus Mode):
Reach the Emperor or Great Emperor rank with a created fighter to acquire the Hangar stage in versus mode.
Thanks to Revolution readers xavier mcgowen, Dragoon and Jesse ZavaZ!