Hi again and thank you for persisting! This looks like a change in Linux that prevents running certain libraries. You can see other games have had this problem, for example https://steamcommunity.com/app/330020/discussions/1/594032343582444765/#c8406104...
I'll make a release in the next couple of days that should fix this. If you'd prefer to fix it yourself you can:
1. Install execstack:
sudo apt install execstack
2. Remove RWE/RWX from the FMOD libraries. From your installation directory (`/home/michael/.config/itch/apps/dwerg-saga/`):
execstack -c libfmod.so execstack -c libfmod.so.11 execstack -c libfmod.so.11.8
Let me know how you get on.
With thanks,
Jock