Angel
Highlight Devil and press Start.

Select practice mode stage
Highlight Practice Mode, hold L2 and press R2 the following number of times:
01 - Law
02 - Yoshimitsu
03 - Ling
04 - Hwoarang
05 - Lei
06 - Ogre
07 - School Stage
08 - Jin
09 - Nina
10 - Eddy
11 - King
12 - Heihachi
13 - Eddy
14 - Unknown
15 - Law
16 - School Stage
17 - Jin
18 - Nina
19 - Yoshimitsu
20 - Paul

the Monster Behind Unknown
In Arcade Mode, highlight Unknown, hold select, circle and triangle, and press R1, R2 and the same time. Only the monster behind Unknown should appear during game play on the 4th stage.

Tiger
Highlight Eddy and press Start.

Gallery Mode
Unlock Devil to access the gallery mode.

Unlock Doctor Boskonovitch
Get the top score in Tekken Bowl mode.

Tekken Bowl Jukebox
Get 200 points in Bowl Mode.

Secret Characters
Win the game to unlock each secret character, which are opened in this order:

Kunimitsu
Bruce Irvin
Jack-2
Lee Chaolan
Wang Jinrey
Roger and Alex
Kuma and Panda
Kazuya Mishima
Ogre
True Ogre
Prototype Jack
Mokujin and Tetsujin
Devil and Angel
Unknown.

New Outfit for Armor King
First finish the game using Armor King. Then go to the character selection screen, highlight him and press Start.

HINT
IN TEKKEN BOWL MODE, GET THE SLOWEST GUYS LIKE ALEX, TO UNLOCK ALEX, HIGHLIGHT ROGER AND PRESS X, USE ALEX AND K.O THE CROWD BY GOING THE LEFT OR RIGHTEST AND THE SLOWEST AND IF YOU K.O SOMEONE YOUR NEXT TRY THEY WON'T BE THERE!!!

Ling's Extra Ending
Beat Arcade Mode with Ling, then beat it again in her schoolgirl costume. Then you can to view 2 different endings that she has.

To get Dr. Boskonovitch
get the highest rank in tekken bowl. Using any of the following characters makes this easier:- unknown, brian, yoshimitsu.
Alternatively, you could hit dr.B on the left of screen 10 times in a row, then yu get him.

Unlock Heihachi
Beat Arcade Mode without losing in less than 5 minutes, 30 seconds.

Unlock Devil Jin
Play as both Jin and Heihachi in tag mode and press Left, Right, Square, Triangle, Triangle, and X while playing as Jin.

Tekken Bowl Mode
Unlock Ogre to access Tekken Bowl Mode.

Theater Mode
Win the game one time to unlock the Theater Mode.

Gon
In Arcade Mode screen, Highlight Heihachi
The Press up, up, down , down,x and beat him on Stage 5 The in Vs Mode Press x As Highlighting Heihachi.
And Gon Will be there For You -

Unlock Gold Tetsujin
Win 10 matches in versus mode.

Jun Kazama's Geisha costume
Beat arcade mode 3 times using Jun and Unknown without losing or in Tekken Bowl get a 275 point using the same characters (Jun and Unknown) press O Jun will wear a black kimono (with white and red butterflies on them) and she will wear a black Flip Flop (without socks) and will wear a geisha hair it is as simple as a normal geisha

Play Unknown *Tekken Tag Tournament*
Unlock all secret characters (including OGRE) then highlight Roger/Alex then go to the right and unknown can be played

Devil is kazuya
Unlock devil and then choose him and kazuya
during that time when the eoppponent beats
the oppenent gets a hit but no life goes

Extra Jun Outfit
In any mode highlight jun then press R1 to get her extra outfit

Ling Xiaoyu School Uniform
Complete arcade mode with ling xiaoyu then press start to get her school uniform also beat the game with the school uniform to get an extra ending for ling xiaoyu in theater mode

Extra Jun Outfit
In any mode highlight jun then press R1 to get her extra outfit

Ling Xiaoyu School Uniform
Complete arcade mode with ling xiaoyu then press start to get her school uniform also beat the game with the school uniform to get an extra ending for ling xiaoyu in theater mode

Beat every1 wid lei
When your playing as lei in any game continously press: circle, circle, x, x. and lei will do a move dat will do a k.o