Indeed, I played the web version just to check the BGM and SFX, it works! Not sure why Godot would struggle with audio on Linux, may be related to setup on my side, but other Godot games played audio fine (that said, some of them didn’t have audio at all, confirmed by developer so cannot tell at 100% that they wouldn’t have this issue).
I forgot to praise the art, it’s very efficient and I like “small garden” styles which are fitting for isometric maps like these!