Samurai Jack: The Shadow of Aku During gameplay, enter the following codes: Hold Left stick Left + Right stick Right. Press X, Triangle, Square, Circle, X, Triangle, Square, Circle Full Health Hold Left stick Left + Right stick Right. Press Circle, X, Square, Triangle Fully Juiced Zen Meter Hold Left stick Down + Right stick Up. Press X, Circle, Square, Triangle Crystal Sword Hold Left stick Up + Right stick Down. Press Square, X, Circle, Triangle Flame Blade Sketch Gallery: Beat the game on Easy. Background Gallery: Beat the game on Normal. Model Gallery: Beat the game on Hard.