@kisak-valve Here is the log:

steam-220440.log

You have quite a few of these warnings "failed to load .so lib for builtin xxx.dll".

There's also an error about missing Mono which is issue #18

DMC Runs on 64bit Proton 3.16-6 FInnaly got it to work
Install vcredist 2005,2008,2010 And netframework 4.0 Using Wine Tricks
WINEPREFIX="/Your Steam Location/steamapps/compatdata/220440/pfx" WINEARCH=win64 winetricks

Runs for me, too, but all I had to install (after the auto setup that Steam does) through winetricks was dotnet40 - but twice. Same thing that got Killer Is Dead running for me.

After the first time it ends with this note on the CLI:

dotnet40 install completed, but installed file /…/steamapps/compatdata/220440/pfx//dosdevices/c:/windows/Microsoft.NET/Framework/v4.0.30319/ngen.exe not found

Maybe it does some async read/write stuff and that didn't complete during the first pass? Anyway, I also get a "unable to find version of the runtime" popup on the 1st launch here. Doesn't seem to matter though.

Ubuntu 18.04
Proton 3.16-6 Beta

I made a Video on how i did it
https://youtu.be/nEJ5JDgVL48
Hopefully this can help development on the hardship some of us have to do to get some games running i think they should make pre-made prefixes so we can have everything ready to go to play with a click of a button

DMC Runs on 64bit Proton 3.16-6 FInnaly got it to work
Install vcredist 2005,2008,2010 And netframework 4.0 Using Wine Tricks
WINEPREFIX="/Your Steam Location/steamapps/compatdata/220440/pfx" WINEARCH=win64 winetricks

I did that and I got error msgs every time, something was installed but the game don't launch yet

logs.txt

That game is my niece's favorite and I would like to be able to run it in my desktop under Linux Mint Tessa, Proton 4.2-2
Thank you in advance if anyone could help...

I tested this game with D9VK enabled, and it works out of the box, but it has a permanent mouse pointer in the middle of the screen.

proton 5.0-2, crash to desktop after black screen
steam-220440.log

proton 5.0-2, crash to desktop after black screen
steam-220440.log

Have you tried PROTON_FORCE_LARGE_ADDRESS_AWARE=1 PROTON_NO_ESYNC=1 %command%

proton 5.0-2, crash to desktop after black screen
steam-220440.log

Have you tried PROTON_FORCE_LARGE_ADDRESS_AWARE=1 PROTON_NO_ESYNC=1 %command%

Tried, does not help.

steam-220440.log
Game randomly crashes to desktop under the latest Proton experimental.

Hello @MilesRdz, these look like some lines of interest from your log:

warn:debugstr:OutputDebugStringA ".\\source\\common\\NTTime.cpp(95): ntAssert failed: end >= start\n"
[...]
warn:seh:dispatch_exception ".\\source\\common\\NTTime.cpp(95): ntAssert failed: end >= start\n"
[...]
warn:seh:dispatch_exception EXCEPTION_BREAKPOINT exception (code=80000003) raised
[...]
wine: Unhandled exception 0x80000003 in thread 2d8 at address 1354F8CF (thread 02d8), starting debugger...
[...]
0x1354f8cf EntryPoint+0xffffffff in ntphysx_core_x86_r: int	$3

Thank you for looking into this.
Please let me know if there's anything else you would like for me to provide or test.