Use the eye gouge over and over. After done several times you will eventually pull his mask off. The masked character's face will be revealed to the world.
Play as Wrath
if you beat DOA on Cruiserweight you will get Wrath as a playable character in DOA.
When your opponent is outside the ring and you are inside you can slide or dive threw the ropes (depending on your character) by running at the person and hitting A and then the right shoulder button. You have to be more than half way across the ring for this to work though. Also the Giant does not do this move, probably because of his size.
If you beat NWO in league challenge you will be allowed to play as Macho Man Randy Savage.
Go to League Challenge. Then choose WCW. Play Dallas Page and defeat him. After this you will now be able to pick him from the player select screen.
Just beat IU in League Challenge mode to be Glacier.
When you beat all the different game modes, you will get to an extra menu called Whole World Wrestling. After you beat both Heavyweight and Cruiserweight you face a boss. Defeat that boss and you will be able to pick him as a playable character. The boss for Super Heavy is Joe Bruiser. The boss for Super Cruiser is BlackWidow.