Teenage Mutant Ninja Turtles (2003 Version) Cheats (PC)

Beat a level to unlock it
  for Stage Select
  

Beat Dojo Stage #3 using
  all 4 turtles and you get the Secret of Gembu move which will damage
  all enemies on screen
  

Casey Jones: Beat Stage 1 with
  Raphael

  Evil Turtlebot: Beat Stage 3 with any turtle

  Hun: Beat Stage 6 with Michaelangelo

  Splinter: Beat Dojo Stage 3 with Leonardo

  Shredder: Beat Shredder with any turtle

  Oroku Saki: Beat Saki with any turtle

  Yoshi Hamato: Beat Challenge Mode with any turtle
  

Change your PC System date
  to Dec 24th or 25th to get Santa outfits or October 31st for Halloween
  outfits.
  

  

  

asswords

  Go to the options and then go to the password screen. Next you will
  see 5 symbols 

M - Michelangelo

D - Donatello 

L - Leonardo 

R - Raphael 

S - Master Splinter 

  
Get Challenge
  Mode Unlocked
  
Beat story mode using all 4 turtles