Fighting Vipers 2 - Platform: Dreamcast

Bonus stage:
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Complete stage 7 in arcade or random mode in less 
than 5:50 with at least half of your strength 
remaining or a Super K.O.

Play as Kuhn: 
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Reach and defeat Mahler in arcade mode in less than 
5:50 with at least half of your strength remaining or 
a Super K.O. Then, defeat Kuhn in the bonus stage.

Play as B.M:
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Defeat B.M. in arcade or random mode with a Super K.O.

Play as Del Sol:
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Defeat Del Sol in random mode and complete the game. 
Del Sol will randomly appear as Tokio's first opponent.

Alternate costumes: 
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At the character selection screen, highlight a fighter 
and press Up or Down. 

Full pause screen:
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Pause the game and press X + Y.

Powerful punch:
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Hold Back and press X (Punch). 

Powerful kick:
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Hold Back and press Y (Kick). 

Charlie's bike: 
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While playing as Charlie, press Down(2).