WWE SmackDown! Here Comes the Pain Cheats

In the weight room, walk onto the treadmill and press the square button by it to start walking on it. Now press X really fast and your character will begin to run as your special meter fills up. Do this until you have all your specials, then press square again to get off.

Find the wall that appears to be cracked, and Irish whip your opponent into it. The wall should break away, revealing the previously hidden area.

In a match that allows interference, press R3 during the match to have someone come to your aid. Only works if you're in a stable.

If you watch the entire credits. After the credits a hidden FMV will play. John Cena will do a freestyle rap about the game.

This secret (non-obvious ingame trick) allows you to get easy wins in hardcore matches. In the corridor with the cage structure, climb it, break the two panels on top. Stand at the upper right side of it, and watch as the AI blindly walks into the hole, damaging himself as he falls down. This trick allows you to win effortlessly.

When creating a running animation create it so the character is skating. When you give this animation to a character he/she will not be able to be Irish whipped into the turnbuckle making it hard for someone who has a finisher at the turnbuckle to use it. Also your characters running speed will be improved.