During gameplay HOLD R1 + R2 + L1 + Select and press X, Circle, Square, Triangle, X, Circle, Square
Unlock two more characters in arena mode!
Start or continue a
campaign. Beat vadridgar(i think that's his name)the arena master for the second time. Then win the next match and you will
have two new characters in arena mode!
Unlock Extra Characters/levels
Beat the campaign mode on the
"I can win" difficulty and after the credits a new level is playable against two new characters. Beat this level and you can
play it and the characters in the multiplayer arena. (note: you have to load, then quit your campaign after unlocking this
level once you turn off your PS2)
Find the KAMIKAZE!
If you haven't yet found the KAMIKAZE then
listen up. On the level "the forgotten place" there is a patch in wall that is boarded up a little bit, it looks like someone
has blown a hole in it and someone else had patched it up. Use any gun (except the "gauntlet") and shoot the wall to reveal
a hole then walk inside. To you're left should be the Kamikaze, pick it up and press square to obliterate yourself and your
Unlimited Quad Damage
When you fist start enter
your name as "HAT_TRICK" and you will have unlimited Quad Damage through the whole game!