Cleared the game with Asagi (Arcade, Xbox Novice, Xbox 360 modes only).
Continues are allowed so this is an easy one.
Modes able to unlock this (confirmed): Xbox Novice
Modes able to unlock this (supposed): Arcade, Xbox 360
Modes unable to unlock this (supposed): all other modes
* Changing setting in OPTION -> Game Config disables all achievements.
* Using Restart from pause menu disables all achievements in that play.
Related Achievements (Original/Novice clear with all characters)
(Original/Novice clear with Ageha)
(Original/Novice clear with Tateha)