The final boss in link’s awakening is a multi-stage shadow thing (https://www.youtube.com/watch?v=qZu01qH2f0c https://www.youtube.com/watch?v=qZu01qH2f0c) with

The final boss in link’s awakening is a multi-stage shadow thing (https://www.youtube.com/watch?v=qZu01qH2f0c https://www.youtube.com/watch?v=qZu01qH2f0c) with the final one being the arm flail thing. I managed to beat it with sword beams (meaning never getting hit through all the stages, because sword beams only works at full health). Apparently you’re supposed to use arrows on it, but when I had initially tried, they had kept bouncing off. So only bombs and sword beams seemed to work. It took me a few weeks and many tries, but finally I got-gud and eventually did it. Sometime after I learned arrows do work.