Samurai Western Codes -

Full health gauge:
Pause your game, then hold + (in order) and quickly press , , , . You will hear a sound if you have entered the code correctly.

Full Master Mode gauge:
Pause your game, then hold + (in order) and quickly press , , , . You will hear a sound if you have entered the code correctly.

Health drops to 1 point:
Pause your game, then hold + (in order) and quickly press , , , , , . A sound will confirm correct code entry.

Master Mode gauge drops to 1 point:
Pause your game, then hold + (in order) and quickly press , , , , (x2). A sound will confirm correct code entry.

Enemies shoot faster:
Pause your game, then hold + (in order) and quickly press , , , . You will hear a sound if you have entered the code correctly.