The Unholy War Codes -

Play as Beta Razor-fane and Super-Prana Devil:
Select mayhem mode, then highlight the "Set Teams" option. Press and release Circle + Square. Then, press Select(4), Start(3), Square(2), Circle, Circle + Square. Beta Razor-fane and Super-Prana Devil will now be available for selection.

Bonus maps:
Select mayhem mode, then highlight the "Accept Teams" option. Press and release Circle + Square. Then, press Select(4), Start(3), Square(2), Circle, Circle + Square. The Maze and Menhir Circle will now be available for selection.

Single player map select:
Select strategy mode, then highlight the "Set War" option. Press Circle + Square. Then, press Select(4), Start(3), Square(2), Circle, Circle + Square. Any single player map may be selected for game play.