Hello @Azonnali, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/3898#issuecomment-3192585287.
proton 10.0-2x1 2025-08proton experimentalx1 2025-08proton hotfixx1 2025-08PROTON_LOG=1x1 2025-08
Compatibility Report
System Information
I confirm:
[ X] that I haven't found an existing compatibility report for this game.
[ X] that I have checked whether there are updates for my system available.
With Proton Experimental a Wine Error Occurs - see Screenshot. Proton Hotfix and Proton 10.0-2 (beta) launch and play without problems.
The following error message gets printed out: Please note that if i put "PROTON_LOG=1 %command%" to the launch options the game just has a black screen and never does anything - it just hangs. So it didnt create a log for me.

Reproduction
Launch Hunt Showdown with an Intel Alchemist card and Proton Experimental.