Unlock Illegal Moves: During gameplay enter the following codes while fighting to unlock the corresponding illegal blow.
Illegal Low Blow - R1 + R2 and press X.
Illegal Elbow - R1 + R2 and press Square.
Illegal Head Butt - R1 + R2 and press Triangle.
Illegal Kidney Punch - R1 + R2 and press Circle.
Illegal Kick - Triangle + Circle + X + Square.
Unlock Judge Mills Lane as a Boxer: Enter the 'Options' screen and view the Cyber Athlete video sequence. Then enter Exhibition mode and intentionally get disqualified. Mills Lane will then be unlocked as a Middleweight Boxer.