The instructions don't explain how to set up an AppImage on Arch

[bound-variable]

The information here for Arch is,

If you are seeing "fusermount: mount failed: Operation not permitted"

sudo chmod u+s which fusermount

But this isn't the basic information we need. We first need to know that we have to manually install FUSE. And information on how to do this isn't given on the Arch wiki either (there, we're told only how to unmount FUSE).

[probonopd]

Can you please retry with the latest https://github.com/AppImage/type2-runtime/releases/tag/continuous build?
We have changed a lot there.

If you want to try:
https://github.com/AppImage/appimagetool/releases/tag/continuous uses it.

Thanks for retesting.