Fighting Vipers 2

Alternate costumes:
Highlight a fighter and press Up or Down at the character selection screen.

Full pause screen:
Press Start to pause game play, then press X + Y.

Bonus stage:
Defeat Mahler in arcade mode faster than 5:50, and either have more than half your energy or finish your opponent with a Super K.O.

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

Fight as Del Sol:
Successfully complete the game after defeating Del Sol in random mode.

Fight as Kuhn:
Defeat Kuhn in the bonus stage in arcade mode.

Fight against armorless B.M.:
Defeat Kuhn in the bonus stage in arcade mode. B.M.'s armor will fall off before your match with him.

Alternate Honey costumes:
Successfully complete arcade or random mode with a total of six or more Super KO finishes. Hold R or Z when selecting Honey at the character selection screen for a pink or blue costume.

Alternate ending:
Defeat B.M. in the final match with a Super K.O. to view alternate character art during the ending sequence.

Alternate views:

Start a fight, then hold Up at the loading screen.

출처 : http://www.gamewinners.com/DC/FightingVipers2.htm