You must do these button combinations on the main menu:
• "Left, Y, Down, Left, Y, X, Left, X, Y, Down, Right, X, Left, Up, X, Right" - Unlock Everything
• "Left, Left, Right, Right, Up, Down, Up, Down " - Randy Savage & John Morrison Alternative Attire
• "Down, Left, Up, Right, Right, Up, Left, Down" - Steve Austin & CM Punk Alternative Attire
• "Up, Down, Left, Right, Up, Up, Down, Down" - Jake Roberts & Randy Orton Alternative Attire