Marvel Tokon: Fighting Souls is the latest fighting game collaboration between a game studio and Marvel Comics. Generally speaking, there isn’t much to do outside of the arcade or story modes, as well as challenging combo trials to get those fingers slamming on the buttons, but little else. However, there has been a shift toward including single-player offerings, and as such, there are a sizeable number of single-player modes available from the start. Color 7 - get 100 KOs in Survival Mode (this also unlocks Hard Survival) Color 8 - complete both Action Check and Combo Challenge for each individual character to unlock their colors.
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GameSpot