@coffeeguru87 I've uploaded Tallowmere_v352.4_Beta1_Mac64.zip now.
Can you please try it out? Should be accessible on your itch.io purchases.
Not sure if you and I have the same controller or not.
Mine appears to be an Xbox One S Bluetooth controller. Game detects its name as Unknown Xbox Wireless Controller.
Unfortunately through my debugging, neither triggers (LT and RT) work, and the D-Pad seems to only have one axis rather than two, so D-Pad Up and D-Pad Left are mapped together, and D-Pad Down and D-Pad Right are mapped together too. Don't think there's much else that can be done about that. But I've mapped all the other buttons okay.
If the controller does half-work for you, you'll want to edit the binding for Shield Block, and probably change it to RB. (in-game, press Start/Menu > Options > Input > Edit Controls)
Additionally, I couldn't get the Xbox controller via USB be detected at all. Just doesn't seem to be a fully-compatible controller with macOS unfortunately.
Please let me know how you go anyway.