Lock frame rate
At the title screen, press Up, Triangle, Left, Circle, Down, X, Right, Square to unlock an option to set the processing mode (frame rate) to variable or uniform.

Play as Copain:
Successfully complete the game as Femme.

Play as Hardi:
Successfully complete the game as Copain and Ciel with the top money rank as those characters. Then, successfully complete the game as Rival to unlock Hardi in survival and time attack mode.

Play as Rival:
Successfully complete the game as Ciel without losing to Rival.

Camera option:
Successfully complete the game with an "SS" rank.

Scene select option:
Successfully complete the game with all four characters.

Survival mode option:
Successfully complete the game as Copain with the top money rank.

Time attack option:
Successfully complete the game as Ciel with the top money rank.