Big Head Mode 
     At the main menu, press R1, R1, L1, R1.
 
Exploding Fists 
     Press R1, R1, TRIANGLE, SQUARE, CIRCLE, R1, R1 at the main menu.
 
Flame Mode 
     To enable this mode, go to the main menu and press CIRCLE,
TRIANGLE, SQUARE, CIRCLE, TRIANGLE, SQUARE.
 
Hot Fists 
     Press L1, L1, CIRCLE, SQUARE, TRIANGLE, L1, L1 at the main menu.
 
Invincibility 
     Go to the main menu and press: L1, R1, L1, R1, L1, R1, L1, R1.
 
Liquid Metal Mode 
     To enable this mode, go to the main menu and press SQUARE,
TRIANGLE, CIRCLE, SQUARE, TRIANGLE, CIRCLE.
 
Pin Head Mode 
     At the main menu, press SQUARE, CIRCLE, TRIANGLE, SQUARE,
CIRCLE, TRIANGLE.
 
Small Head Mode 
     At the main menu, press L1, L1, R1, L1.