There appears to be a bug on the Linux version of this release.
Attempting to progress past the first map that loads after the intro sequence results in a loading screen that eventually ends in this error message:
Loading Error
Failed to load: img/doodads/Others/shadows_openingcliffpath1.png
["Retry" button]
As a workaround, the Windows version when run on Linux using Wine will load the next screen correctly (and the Itch desktop client for Linux will transparently make this happen in the background if told to install the Windows version instead of the Linux version).