This is the hardest area I have yet to go to. And here is how I did it. Orange is single harpoon, meaning only one harpoon needs to be out. Purple is when multiple harpoons are out, and blue is where you go.
I'm stuck on this part. I really have no idea how to get it to work. I've tried it 100 times. You ride the harpoon back and turn the red green and land on the gate I assume. You then basically start all over and follow the path back up to the top and now the red up there will be green allowing you to get the gold harpoon. But I can't seem to make it onto that gate no matter what I do.
Has anyone been able to beat this area yet? I don't want to quit because it's the last part =/.