Infinite stamina
At the main menu, press R(2), B, R(2), B.

Indestructible weapons
At the main menu, press L, R, L, R, C-Left(2).

Big women wrestlers
At the main menu, press R(2), B(2), L(2).

Small wrestlers
At the main menu, press R(2), L(2), C-Left, C-Right.

Alternate grunts
At the main menu, press R, L, R, L, B(2). The normal grunts will be replaced with rude sounds.