Virtua Fighter 2 is a Wii Virtual Console game.

Unlock clothes:
     Hold UP and then choose your fighter with the A button or C button.
or 
     Hold  DOWN  and choose your fighter with the A button or C button
or Start button.

No Damage
     Hold B while highlight player one's life selection at the Options
screen,  until  you  see  the "No Damage" message. Then push the Start
button.

Unlock Dural as playable character:
     Highlight  Jacky  if  using controller-2 or or highlight Akira if
using  controller-1.  Then press Left and then Right on the Diectional
pad. Repeat the process until Dural appear as a selectable fighter.

Secret options
     Highlight  the  "Exit"  tab  at  the options screen, and tap Left
until the secret options appear.

99 seconds of time:
     Go to the fighter selection screen and press Down, Up, Right, and
A + Left for more character selection time.