where do you go after getting the magic arrow? or is that all because I saw an area blocked by purple rocks with a ! sign by it in a language I couldn't understand, but it think it was saying its not done yet
Yes... that's it. That sign stated that the game was only made up to that point. Behind the purple stones would be the continuation of the path.
But it's great to know that you played practically all of the build content. Thank you very much for playing