The game runs just fine after doing the following steps:

1. run the game with PROTON_DUMP_DEBUG_COMMANDS=1 %command% from Steam, this will create a script to run the game in the following path: "/tmp/proton_YOURUSERNAME/run". Open this script with an editor because it contains various environment variables that you will need to run stuff.
2. open a terminal and run git clone https://github.com/z0z0z/mf-install && cd mf-install
3. install winetricks, on debian/ubuntu is just "apt install winetricks" (requires root/sudo)
4. now you will have to run install-mf.sh inside of the wineprefix. The easier way is to copy the WINEPREFIX variable from the step 1 so you will run something like WINEPREFIX="/something/steam/steamapps/compatdata/842100/pfx/" ./install-mf.sh.
5. same as the command on step 4 but with winetricks, you will run something like WINEPREFIX="/something/steam/steamapps/compatdata/842100/pfx/" winetricks xact

additional (optional?) steps: steps 4 and 5 will run your system wine installation instead of the proton one. If you don't want to do this (because it could mess up something or because you don't have a system wine installation) additional steps are required (example for step 4 but it is the same thing for step 5): a) copy the proton wine path from the script of step 1, it will probably be something like /home/YOURUSERNAME/.local/share/Steam/steamapps/common/Proton 4.11/dist/bin/wine and run the following commands: alias wine="/home/YOURUSERNAME/.local/share/Steam/steamapps/common/Proton 4.11/dist/bin/wine" and alias wine64="/home/YOURUSERNAME/.local/share/Steam/steamapps/common/Proton 4.11/dist/bin/wine" b) now copy every variable from the script in step 1 and write in a sequential order in your terminal followed by the ./install-mf.sh command, you will have something like PATH=blabla WINEDEBUG=blabla WINEDLLPATH=blabla LD_LIBRARY_PATH=blabla WINEPREFIX=blabla WINEESYNC=blabla SteamGameId=blabla SteamAppId=blabla WINEDLLOVERRIDES=blabla STEAM_COMPAT_CLIENT_INSTALL_PATH=blabla ./install-mf.sh