With a quick code, you can make Batman invincible!!

Invincible - Batman: Rise of Sin Tzu for Game Boy Advance

Here’s the cheat:

• Choose “Continue” on the main menu
• Enter the password “_ N D T H _”
• Passwords
  • M Q F V 8 K — Boss battle: Bane
  • L 2 0 _ Q D — Boss battle: Clayface
  • 6 V 2 C L 2 – Boss battle: Scarecrow
  • 4 V 2 5 2 V — Boss battle: Sin Tzu
  • _ F L Y M F — Unlock all levels
  • _ F L Y M _ - Not sure