Atmosphere glitches
If you are fighting on the level with the people on your left and right, you can do a special to kill, K.O or flip a person into the air.Also if you are fighting in the Parking lot you can do a effective attack or special to send yuor enemy flying through a support beam!
Get Miharu
Finish story mode using Xiaoyu then select her again using the circle button
Get Violet
Select Lee using the circle button
Get Schoolgirl Xiaoyu
Finish story mode using Xiaoyu then select her again using the triangle button
Get Panda
Select Kuma using the triangle button
Get Eddie Gordo
Finish story mode using Christie then select her again using the circle button
Get Theatre Mode
The Theater Mode gets opened up after you beat Story Mode once with whatever character. At that time you are able to listen to the stage soundtracks, view the movies of the character you just beat Story Mode with and the attract movies (Arcade Intro, PlayStation2 Intro, and both EMBUs). You need to keep on beating Story Mode with different characters all ending movies. Getting all movies requires you the beat Story Mode with both Kuma and Panda.
Ling School Girl Outfit
Select Ling with Right Punch after you have beat Story Mode with Ling.
Releasing All Characters
Keep beating Arcade Mode or Story Mode with different characters until everybody is released. There is no hidden 'off screen' characters. What you see is what you get.
Get Dojo Stage
Finish all 4 Tekken Force Stages
Getting Your Records On The Internet Ranking Site
Beat whatever mode you would like to enter your records for using the default game settings (these are the settings colored green, such as 2 rounds or medium difficulty). Once you have beat the mode and you enter your initials press and hold Square and Triangle, then tap u/f on the joystick. You will see a password you can enter on the Japanese PlayStation2 Tekken 4 Namco site.