Samurai Dou Portable
Increase weapon durability
Pause game play, then hold L + R and press Left, Right, Left, Up(2), Triangle.
Highlight the name at the character creation screen, then press L, R, L, R, L(2) then hold R + Square.
Pause game play, then hold L + R and press Up, Down, Left, Right, Up, Down, Triangle.
Enter the weapon gallery from the character creation screen, then press Down(4), Right(2), Left(3), Right.