The Game works out of the box. Only problem is that the editor doesn't work. Which means that the standard way of installing the database patch doesn't work. Here's a simple soultion for that problem: I installed Protontricks. Then right-clicked the .exe and selected "Open with Protontricks Launcher". From there you can simply install it like you would in Windows. It takes quite a bit but works flawlessly. Both for the database and the portraits pack.