Fight as Doctor Boskonovitch:
Select Tekken Force Mode from the main menu. Your first goal is to fight Heihachi's "Tekken Forces" all the way to the Mishima Fortress, where you will hopefully get to fight Heihachi Mishima and defeat him. When you have accomplished this, you will get a copper key. Do this three more times to get the silver and gold keys. The third time you defeat Heihachi, a message saying "Final Stage Challenge" should appear on the screen. You will then go to the Underground stage where you must fight the Doctor. Not only is he very tricky, but the 60 second time limit makes him even harder to beat. Defeat him to unlock him in arcade mode and the Underground stage.

Complete Tekken Force Mode four times and defeat him at the final stage. He will be playable in all modes including arcade mode.

Fight as Gon:
Complete arcade mode using Doctor Boskonovitch. Then, select arcade mode and press the D-pad off either side of the character selection screen. Alternatively, defeat Gon under "Ball mode" or play survival or force mode until prompted for initials, then enter GON

Fight as Disco Gon:
Fight as Gon ten times through the game, then complete Tekken Force Mode four times. Fight as Gon ten times through the game again. If done correctly, Gon will have an afro.

Unlocking Gon and Dr. Boskonovitch easily:
Set the game on easy, one round, and unlimited time. Play in arcade mode and on the fourth, fifth, sixth, and seventh round, allow your opponent to take all but five percent of your health before defeating him. If done correctly, the announcer will say "Great". Gon or Dr. Boskonovitch will be your opponent in the next round. Defeat them to unlock them as playable

Beach ball mini-game:
View all endings of the ten base characters to enable the "Ball Mode" option.

Theatre mode:
Unlock each character, including Panda, Tiger, Doctor Boskonovitch, and Gon, and view their endings. The "Disc" and "Sound" options under "Theatre Mode" will now be available.

Record or replay combo:
Enter practice mode and choose the "Freestyle" selection. Press L1 + L2 + R1 + R2 + Circle at the freestyle options screen. Then press Down + Select to record or replay a combo.

Alternate ending pose:
Perform the following after defeating your opponent on any round. Hold X or Circle throughout the instant replay. Your fighter will perform a special pose.

Alternate introduction sequence:
Complete the game with the ten base characters to view an alternate introduction featuring the characters in their two-player mode costumes. For another alternate introduction, complete the game with all characters including the secret characters.

Alternate costumes:
Select arcade mode, highlight a fighter on the character selection screen, and hold R1 + R2 + L1 + L2 until the timer reaches zero. Release the buttons when both fighters are displayed.

Alternatively, play as the desired character the indicated number of times. Then, highlight that fighter on the character selection screen and press Start: Ling Xiaoyu (fifty times), Jin