So I recently downloaded UTY, and I'm fairly new. So I just want to know if there's anything I should know about speedrunning this or any requirements. (And by new I downloaded it yesterday and am currently at area of the Dunes where Marlet comes and joins you again)

You should run on V1.1 as it’s the most recent version that can run the automasher (make sure you download the mod) If you want guides on the neutral and genocide routes, you can find them on this SRC page. (A pacifist guide may exist but I’m unaware) The neutral guide is mostly up to date, except for a few minor things involving the automasher which aren’t that big of a deal.

Alright looks like there is a pacifist guide. I haven’t checked this page in a while my bad