i made it through the game on hard mode, it took alot of patience and tries but i finally made it through. and i was using the master sword against the king
Sfter you completed 2 levels after the second boss there is a acid pit and vines you have to swing on. In the middle of the 2 vines there is a lightsaber on a small platform. Land on it, pick it up, and there you go, a 30 atk and fast weapon