https://docs.google.com/document/d/1gXPH4_KhCFiem0QofWtjZKM_KNsbILaTXsLxGjDJ3dM/edit?usp=sharing

This is the most up-to-date route that I've used for any sort of Hard Mode speedrunning. My segmented run of this route comes out to a 5:40 IGT as seen in the screenshot below.