Type these codes into the "CHEAT" box located on the character select screen.
 
BOSSONE
(play as Mongro)
BOSSTWO
(play as Charlston)
GRENADES
(shuriken grenades)
2SWORDS
(player gets two swords to start)
NOSWORDS
(bare knuckle fighting)
SHOTGUN
(start with the shotgun)
KUNGFU
(battle like crouching dragons)
HIGHJUMP
(both players jump higher)
BIGHEADS
(nba jam style fun)
SHADOWS
(fight with reflections only)
MOREAMMO
(more shurikens shotgun ammo)
NODAMAGE
(no hits from opponent)

LEVEL CODES:
LEVEL1 / LEVEL2 / LEVEL3 / LEVEL4 / LEVEL5
LEVEL6 / LEVEL7 / LEVEL8 / LEVEL9
BONUS1 / BONUS2 / BONUS3