Thank you for the tutorial!
To fix the mentioned config.xml issue, here's what prolib told me:
1) Get the latest version of lutris from the package manager of your choice
2) Get the Freestyle GunZ installer from https://fgunz.net/
3) Launch Lutris
4) Click the "+" on the top left of the program
5) Install from a windows installer
6) Select the Freestyle GunZ installer
7) Go through the installation process
8) When it is done, click the arrow next to the launch/play button and select "winetricks"
9) Select your wineprefix
10) Install dependencies
11) Select all 3 versions of "MSXML"
When it is done, you are ready to play!
8) - 11) are important to fix XML.