Unlock Mokujin:
Beat Arcade mode 4 times.

Unlock Anna:
Beat Arcade mode 5 times.

Unlock Bryan:
Beat Arcade mode 6 times.

Unlock Heihachi:
Beat Arade mode 7 times.

Unlock True Ogre:
Beat Arcade mode 9 times.

Unlock Kuma:
Beat the game with 1 character.

Unlock Julia Chang:
Beat the game with 2 different characters.

Unlock Gun Jack:
Beat the game with 3 different characters.

Unlock Unlock Ogre:
Beat the game with 8 different characters.

Unlock Tiger Jackson:
Beat the game with 17 characters and select Eddy by pressing 'Start'.

Unlock Panda:
Beat the game with 17 characters and then highlight Kuma and press Circle or X.

Unlock Gon:
Beat the game with ALL non-hidden game characters.

Unlock Anna's zebra skin costume:
Play with Anna 25 times in a row and then select her by pressing 'Start'.

Unlock Jack's Tank Top:
Play as Jack 10 times and then select him by pressing 'Start'.

Unlock Jin's School Uniform:
Play as Jin 50 times then select her by pressing 'Start'.

Unlock Ling's School Uniform:
Play as Ling 50 times and then select her by pressing 'Start'.

Unlock Tekken Ball Mode:
Using ALL non-hidden game characters beat the game.

Unlock Theater Mode:
Using ALL non-hidden characters beat the game in Arcade mode.

Unlock Xtreme Difficulty:
Using every character beat every mode on Hard difficulty setting.