Use the following key when entering the passwords:
Enter "MDLDSSLR" as a password.
Enter "LMDRRMSR" as a password.
Enter "RRDMLSDL" as a password.
Enter "LLMSRDMS" as a password. Shuriken will no longer be available.
Enter "DMLDMRLD" as a password. Healing items will no longer be available.
Enter "SLLMRSLD" as a password. All healing items will turn into Temaki Sushi.
Enter "LDMSLRDD" as a password. One enemy hit will kill the turtles.
Enter "MSRLSMML" as a password.
Enter "SLRMLSSM" as a password.
Successfully complete all sixteen missions in Episode 1 to unlock the Teenage Mutant Ninja Turtles 2: Turtles In Time arcade game.
Successfully complete Episodes 1, 2, and 3 to unlock the Nightmare episodes.
Successfully complete all Nightmare episodes to unlock the Final Nightmare episode.
Successfully complete the Final Nightmare episode to unlock Free mode Area 12 and 13.
Successfully complete Free mode Area 12 and 13 to unlock the Ultimate Turtle Scroll.
