I just beat that last boss and wasn't sure if you still need help I just did jump attacks and then ran when needed health back and beat him within 2-3 minutes quite easily and still had full hp as long as you do jump attacks then spam the attack button

I just beat that last boss. Not sure if you still need help, but I just did jump attacks and ran away when I needed health back. I managed to beat him within 2-3 minutes quite easily and still had full health.

Mainly as long as you do jump attacks and spam the attack button, you should be fine.