To the final boss. I cant really even beat it, because I can only damage it with the aerial attack and I don't bounce off its head whenever I do that. So I constantly hit the rest of his body and end up dying anyways.
When u say final boss are u talking about Hedoroton? The green one? If so the best strategy is to run away from it until it jumps and lands very close to a mushroom stalk and then spam attack its head. Also that is not the final boss, just Boss 2. This game is much longer than most of my games