Tekken Hybrid

Beat Arcade Mode with Armor King. Then to use the new outfit, at the character select screen choose Armor King with the Start button.

During the character vs screen or replay, press and hold the Tag button before the next match begin to fight as your tag partner (2nd character).

Beat Arcade Mode. The order that they are unlocked is as follows:

Unlock Devil to get access to Gallery Mode.

After unlocking Unknown, highlight Roger, and go right.

Highlight Practice mode at the main menu. Hold L2 and press R2 the indicated number of times to select the corresponding stage:

Law (new): 1
Yoshimitsu (light snow): 2
Ling: 3
Hwoarang: 4
Lei: 5
Ogre: 6
School stage (evening): 7
Jin (evening): 8
Nina (daytime): 9
Eddy (sunset): 10
King: 11
Heihachi: 12
Eddy (daytime): 13
Unknown: 14
Law (old): 15
School Stage (daytime): 16
Jin (daytime): 17
Nina (night time): 18
Yoshimitsu (heavy snow): 19
Paul: 20

Unlock True Ogre to get access to Tekken Bowl Mode.

Get 200 points in Tekken Bowl Mode.

Complete Arcade mode once.

When you beat the game, you'll usually get to see a short movie of Jin and a few other Tekken characters practicing in a monastery. However, this isn't the only ending movie you can get. After you've unlocked all the animal characters (Roger/Alex, Kuma/Panda, etc), the ending movie will change occasionally. Instead of seeing human characters train, you'l watch the animal characters train on the tropical island level.