Hidden Option Menu: [submitted by email@example.com]
At the "press star button"/title screen, press Ux12, then START. Select "Options" and if entered correctly, you will hear "K.O.". Scroll the hightlight down the screen until you pass "EXIT" and the highlight vanishes. Press a button and you will enter the hidden options menu.
Solve the game against the computer to make ranking mode available. A short cut to this is to set the options for the game to your favor at the options screen, the using the "Hidden Option Menu", select Dural as your first opponent. Win against only him and Ranking Mode is now available.
Play as Dural: [submitted by firstname.lastname@example.org]
At the character select screen, highlight any character and press D, U, R, (A+L). Then START to begin game.