Various cheats

Password notes:
     Use the following key when entering the passwords.

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

Alternate Costumes:
     Enter the code then hold L1 or R1 when selecting your character:

Donatello: SRSMM
Leonardo: LDMSR
Michaelangelo: RRLMD
Raphael: DMDML 

Longer bandanna and double attack power:

Donatello: SMLLR
Leonardo: SLDDS
Michaelangelo: SMRDL
Raphael: SRRLR 

Shorter bandanna and double defense power:

Donatello: LLSMR
Leonardo: MLLSR
Michaelangelo: MRLLD
Raphael: LSMDR 

Weapon power-up:

Donatello: DRLDS
Leonardo: LMLSD
Michaelangelo: MSRMM
Raphael: RDSRL 

Infinite shurikens:

Leonardo: MSSRD
Michaelangelo: MRRSL 

Master Spinter in Story mode: LLMSR
Casey Jones in Story mode: SRLMD
Alternate hit sound effects: LSLSS
Playmates toy database: LSDRM 


Hints

Challenge mode:
     Successfully complete story mode with all of the turtles.

Casey Jones:
     Complete level 1 as Raphael to unlock Casey Jones in Versus mode.

Evil Turtlebot:
     Complete  level  3  with  any  turtle to unlock Evil Turtlebot in
Versus mode.

Hun:
     Complete level 6 as Michaelangelo to unlock Hun in Versus mode.

Oroku Saki:
     Defeat Saki with any turtle to unlock Oroku Saki in Versus mode.

Shredder:
     Defeat Shredder with any turtle to unlock Shredder in Versus mode.

Master Splinter:
     Complete Dojo level 3 as Leonardo to unlock Splinter in Versus mode.

Yoshi Hamato:
     Complete Challenge Mode with any turtle to unlock Yoshi Hamato in
versus mode.

Holiday Costumes:
     Set  your console's system date to December 25 to see the turtles
with  a  Christmas theme. Set the system date to October 31 to see the
turtles with a Halloween theme.