Steps I used to get Unity Hub and Unity Editor working on Arch Linux:
Download the deb fileExtract data.tar.zst from inside the deb fileInstall libxml2-legacyRun the unityhub binaryIf you experience flickering, ensure a supported GPU is being used (e.g., run with DRI_PRIME=1 for nvidia)You might also need to use -force-wayland as an argument to the unityhub binaryHopefully this is helpful to someone!