It's wild that this game doesn't have this. Divinity 1 Enhanced Edition you can homebrew some form of WASD with this method, https://steamcommunity.com/sharedfiles/filedetails/?id=1115845803 but Divinity 2 has no such methods that work. Baldurs Gate 3 got a WASD mod relatively quickly and yet Divinity 2 still doesn't have one