At the title screen push R1 (7x), R2 and SELECT.
At title screen press R2 (7x), R1, and SELECT.
At Title Screen Press L2 (4), R2 (4), L1 (4), R1 (4), and SELECT.
While fighting at the Disco ring, throw your opponet outside the ring and keep pressing L2, until the time runs out.
At the title screen press R1, R1, R1, R1, L1, L1, L1, L1, R2, R2, R2, R2, L2, L2, L2, L2, Select.
While fighting at any ring press SELECT for computer assistance, a wrestler will come out and help beat up your opponent.
At title screen press R1, R2, R1, R2, and SELECT to scroll through the rings.
Press Start ( instead of X ) to choose. Do the same with Masahiro and he will fight with a NWO shirt.
While fighting at the Disco ring press L2.