if all else fails I suggest you scroll down to a reply comment made by Morphodrift made around 1 day ago, thats where I got the guide from to get their ending
Siri has his full guide completed I'm pretty sure ! Check it out here https://docs.google.com/document/d/1PabomRM9NxDZA4lS720NJyy-wBnOM71jnspeEGy-Nzg/...