Steam: Use the Betas tab to install the patch. The password is: "ashortmmo2022"

GOG Galaxy:  See this page for help finding the folder. It's probably in "Program Files/GOG Galaxy/Games"

Epic Games: Probably in "Program Files\Epic Games\Games"

Itch App: Use this page to help you find the install location.

Default on Linux: [Steam folder]/steamapps/common/A\ Short\ Hike/

Steam folder might or might not be ~/.steam/steam