Teenage Mutant Ninja Turtles 2: Battle Nexus

Enter SDSDRLD as a password. You will lose all health after falling.

Switch characters that you are playing about every 30 seconds to 1 minute or something close to that on a level.[It doesn't matter who you are].

Use the following key when entering the passwords. The codes have no effect in tournament mode.

D: Donatello
L: Leonardo
M: Michaelangelo
R: Raphael
S: Shredder

Win the Open Brawl Tournament. Alternately, Casey Jones is unlocked five days after a saved game file is created; you can change the system date to do this. Casey Jones replaces Raphael.

Got to level 9-1 and get the hidden Antique. Do this by going down one of the alleyways. There will be a pile of crates and a broken down bus. Jump on the crate and onto the bus. From the bus, jump onto the building . There should be two crates here, containing Pizza and the Antique. Then, complete the level and defeat all the Purple Dragons, Foot, and Mobsters. Next, go to the " 2nd Time Around". If you look through the different objects in the "NY" section, you will see the image of an arcade. Select the arcade to see information on it. When you exit out of the information, the message "Classic Arcade Mode Unlocked" will appear, and that option is now on the main menu at the title screen. Note: Do not worry if the screen remains black, or the arcade main screen takes a long time to load; this is normal.

In the arcade game, press X to get more lives instead of quarters. The joystick and certain buttons including the pause feature do not work. The character selection is just like the arcade. Each controller controls a different turtle. You cannot which turtle to assign to a controller. Controller one is Leonardo, controller two is Michaelangelo, controller three is Donatello, and Controller four is Raphael.

Use the following trick to unlock all extra characters at once. Make sure you have a saved game file for the game. Keep the disc lid open when powering on the Gamecube. Set the system date two or more months ahead from the date that
you saved the current game. Insert the game disc and start it. At the title screen, go to "Continue Game". When you get to the level selection screen, go to "Home". You will see every playable character unlocked. To confirm to the game that you
have unlocked the extra characters, just exit home, start any stage, and complete it. When you have finished, the game will confirm that you have unlocked the extra characters, as well as other cheat codes.