Full pause screen:
Pause game play and press R2. 

Fight as Akira:
To fight as Akira complete the game under normal mode as Yugo. 

Fight as Quigtao:
To fight as Quigtao complete the game under normal mode as Yuli. 

Fight as Cindy:
To fight as Cindy complete the game under normal mode as Douglas. 

Fight as Steve:
To fight as Steve complete the game under normal mode as Allen. 

Fight as Arthur:
To fight as Arthur complete the game under normal mode as Ann. 

Fight as Kornelia:
To fight as Kornelia complete the game under normal mode as Heniz. 

Fight as Sessue:
To fight as Sessue complete the game under normal mode as Hyoma. 

Fight as Mark:
To fight as Mark complete the game under normal mode as David. 

Fight as Genya:
To fight as Genya complete the game under normal mode as Saya. 

Fight as Zhou:
To fight as Zhou complete the game under normal mode as all nine starting characters. Then,
complete the game under normal mode once more using any one of the nine starting characters. 
Fight as Kaiya:
To fight as Kaiya complete the game under normal mode as all nine starting characters. Then,
complete the game under normal mode once more using any bonus character. 

Fight as Jelly/Billy:
To fight as Jelly/Billy complete the game under normal mode as Kaiya. 

Fight as Kazane:
To fight as Kazane complete the game under normal mode as Zhou. 

Extra Mode:
To access an extra mode unlock all twenty-two characters.