• Select proton 4.11 in the compatability list in the steam game settings.
• Install Protontricks seperatly if u dont alr have it via ur package manager/terminal or whichever way u prefer.
• Launch Protontricks (it can sometimes be slow to load the boxes, just be patient) and select Select the Default Wineprefix -> Install a Windows DLL.
• Find dotnet40 (MS NET 4.0) in the dropdown list and install it.
• Choose Windows XP when prompted as the new default windows system ( u can always change this back) and click OK to the notification box that might appear.

Launch the game normally, and let it crash if it does, which it might do the first time. The game should run and start normally now if u did these steps correct and ur cat didnt interfere with the process !