Fight as Special Raiya
----------------------
Complete story mode with Raiya under normal difficulty level. 

Fight as Anime Reika
--------------------
Complete story mode with Reika under normal difficulty level. 

Fight as Robo C.
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Complete story mode with Chibi under normal difficulty level

Fight as Panda
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Complete story mode with Marie under normal difficulty level. 

Fight as Akane
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Complete story mode with Kiriko under normal difficulty level. 

Fight as Lina 2
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Complete story mode with Lina under normal difficulty level. 

Fight as Critical H. Star
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Complete story mode with H. Star under normal difficulty level. 

Fight as H. Mysp
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Complete story mode with M. Pow under normal difficulty level. 

Fight as Anime Kiriko, Anime Bin C, and Anime Lina
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Unlock all the previously described hidden characters. 
Complete arcade mode with each of those characters under 
the hard difficulty level.