Use the following key when entering the passwords:
L: Leonardo
M: Michaelangelo
D: Donatello
R: Raphael
S: Shredder
Invincibility:
Enter "MDLDSSLR" as a code.
Max Ougi:
Enter "RRDMLSDL" as a code.
Unlimited Shuriken:
Enter "LMDRRMSR" as a code.
Shuriken Loser:
Enter "LLMSRDMS" as a code.
Endurance:
Enter "DMLDMRLD" as a code.
Sushi Party:
Enter "SLLMRSLD" as a code.
Instant Death:
Enter "LDMSLRDD" as a code.
Enemies 2X Power:
Enter "MSRLSMML" as a code.
Enemies 2X Defense:
Enter "SLRMLSSM" as a code