I've made a pretty comprehensive guide for those who want to try the speedrun for the first time. The routing is not optimal, but the strats are pretty safe. If you have any idea for improvement, please don't hesitate to tell me. https://drive.google.com/file/d/1ODbE02pz3bg9DB93PMZj_HA09JFEBIMm/view?usp=sharing

UPDATE: The guide has been updated to the newer and faster Flurry/Insult to injury routing (thanks to Mordaak for showing me how much of an improvement it was).

UPDATE (March 2021): Morkaak did a total overhaul of the guide to update it with the new strats.