Finish the stage with the item, then take it to ("2nd Time Around") for appraisal.
If you are looking for "free" advantages, you can enter these passwords at the password screen (L = Leonardo, M = Michelangelo, R = Raphael, D = Donatello, S = Shredder): D S R D M R M Infinite Shuriken R S R L R S M Mighty Turtle (Increased Power) L S D R R D R Super Offense Power S D L S R L L Super Defense Power L D R M R L M Teenage Mutant Ninja Turtles 2 Battle Nexus Free
: Beating the unlocked arcade game is one way to unlock secret fighters like Casey Jones , Karai , Splinter , and Slashuur for the main game. Popular Cheat Codes Finish the stage with the item, then take
The most significant hidden content is unlocked by finding a specific that grants access to the original 1989 TMNT Arcade game. How to Unlock the Arcade Game : Go to Stage 9-1 (Mean Streets) . Locate an alleyway with a bus . Jump onto the roof of the bus using nearby boxes. How to Unlock the Arcade Game : Go
Smash the crates on the roof to find a containing an antique item.