Out of curiosity, I installed dotnet 4.5.2, and I can get a black screen, but not much else.
I do not claim to fully understand how it works but i got the full game working and running. As it is build with AI as somewhat of a capability testing excersice for my own learning, i do not claidm to fully understand what the winefix actually does. But in case someone do undestand it beter i hope this will inspire someone to make the correct fix.
Multiple tests has been made in an effort to make sure only the necessary steps needed to get the game running is included.
https://github.com/99kennetn/proton-ge-custom (guide to get it running is inside but run at your own risk)
If the guide is followed the game will launch without any launch parameters (although it has to be launched 1 time where it crashes to make the compatdata folder so that a manual dotnet install can be run, i could not get it to automatically run this upon launch)
3 things are needed to get the game to launch and be playable.
all three are needed. 1+2 needed to get the game to launch and 3 is needed to make it playable.
there are 3 known "issues".
I hope anyone who understands this better than me, will be inspired to make the correct fixes and commits needed to proton and wine, as i will not be blindly putting ai build code i do not understand as a request to any of these repo's.
I put it here to let people know, that it is possible to get the full game to run and that it seems to run very smoothly.
Build upon GE-Proton-11-3 (was what i had already installed to test against) and tested on Kubuntu 26.04
PROTON_USE_XALIA=0x1 2026-10
Compatibility Report
System Information
I confirm:
steam-405710.log
Symptoms
Requires dotnet40 to be able to work.
Notes
One of the developers (bartwe) has responded to comments on the games Steam Discussions page saying:
(It's the last post on the page)
https://steamcommunity.com/app/405710/discussions/0/1693785035830392508/?ctp=2