Batman: Rise Of Sin Tzu Cheat Codes for Gamecube

All bonuses:
Hold L + R and press Left, Down, Left, Right, Left(2), Down, Right at the starting screen with Batman and Sin Tzu standing side by side.
Submitted by: John

Dark Knight difficulty setting:
Hold L + R and press Right, Up(2), Right, Left, Down, Right, Up at the starting screen with Batman and Sin Tzu standing side by side.
Submitted by: John

Unlimited combo meter:
Hold L + R and press Left, Right, Down, Up(2), Down, Right, Left at the starting screen with Batman and Sin Tzu standing side by side.

All upgrades:
Hold L + R and press Down, Up, Down, Left, Down, Right, Up, Down at the starting screen with Batman and Sin Tzu standing side by side.

Unlimited health
Hold L + R and press Up, Right, Up, Left, Down, Left, Down, Right at the starting screen with Batman and Sin Tzu standing side by side. A message will appear to confirm correct code entry.

Making Of Sin Tzu
Defeat Sin Tzu at the end of the game.

Alternate costume
Successfully complete the game under the easy difficulty setting.