Looks great, though I'm unable to get my DS4 working while running on Linux, though I have the proper drivers and it works with other games; not sure if there's a godot engine piece I need or something.
I forgot the most important bit of course; running the latest Arch Linux release, usually in these situations it's just a package or two I need to download rather than something on the program's side, though I don't see any helpful warnings when launching from a terminal.