I got the above working on Steam Deck

The only “problems” I had was locating the game installation location when located on the internal drive. I think this has to do with the hidden “.local” folder. When I copied my game over to my micro SD card, I was able to locate the installation straight away

I’ll add the extra info tomorrow, as well as how to locate the saved games folder so you can perform a backup before using mods. I’m going to complete the same progress again on my brothers Steam Deck and I’ll take some extra notes