To unlock the Secret Beach Arena, simply press: down, right, down, right, down, right, down, square, select.
You will hear a noise if you have entered the code correctly. The beach arena will be available in exhibition for normal and title matches.
Becky - Clear the story mode using Candy Cane
Doctor Cutter - Clear the story mode using Anesthesia
Judgment - Clear the story mode using Bloody Shadow
Killer Khan - Clear the story mode using Aigle
Mistress Spencer - Clear the story mode using Miss Spencer
Noble Rose - Clear the story mode using Evil Rose
Rowdy Reiko - Clear the story mode using Reiko Hinomoto
Sergeant Clemets - Clear the story mode using Dixie Clemets
Showbiz - Clear the story mode using Aisha
The BBD - Clear the story mode using Makoto Aihara
Pause the game at any time during a match. Next, press Select. The Pause menu should disappear, leaving the Pause screen unobstructed.
Select a girl to be viewed in the gallery.
Once inside the gallery do not make any selections or press any buttons for atleast a full minute. The screen will change and an interview will take place.
This works for every girl in any gallery environment.
Beat story mode with every character to unlock Lady X. Beat it with their alter ego to unlock Lady X Substance.
Select 'Exhibition Mode', then pick either 'Normal Match' or 'Title Match'. Select either '1 player', '2 player', or 'computer'. Select the characters you want to swap intro's with. Select the ring you want to hold the match in, then hold down L1 + L2 +R1 + R2 and select 'Play'.
Gallery Mode - Win the title with any girl
Beach Mode - Defend your title with any girl