Successfully complete Arcade mode with each character to unlock Dural in Versus and 
Arcade modes.
Arcade mode Route B

Hold Guard or Punch at the "Yes or No" prompt at the character selection screen in 
Arcade mode. Keep the button held until the match begins. This mode has a different 
order of the fighters that appear.
Dojo training stages

Successfully complete Time Attack mode in Command Training. Then, select Versus mode, 
choose the fighters, then press Down, Down for the fenced Dojo stage or Up, Up for 
the fence-less Dojo stage.