Looking at jack_msg_handler errors in log, this game probably needs XAudio2, related issue https://github.com/ValveSoftware/Proton/issues/54
But this is most probably not the cause of random crashes.
@NTMan The game uses the Unreal Engine 4, i had crashes randomly with Life is Strange 2(UE4) too with Lutris. Disabling esync fixed it.
Then i recommend also for you to start your the game with the launch parameter :PROTON_NO_ESYNC=1 %command%
Per Vermintide 2 (#1528) (specifically an experimental EAC fix), is there a chance some work could be done to test EAC functionality here as well? Or would the Linux switch need to be flipped in the build? It's unlikely Sloclap will dedicate the resources required to do that.
PROTON_NO_ESYNC=1x1 2018-12PROTON_NO_ESYNC=1 %command%x1 2018-12
Compatibility Report
System Information
I confirm:
steam-473690.log
Symptoms
The game crashes randomly
Reproduction
Play in the game