Some notes from me, I've managed to get this game fully working.
First, I am using custom Proton-6.21-GE-2 version. That way game started to launch and even videos seem to be working, just toggle in game's options to resize them.
Second, I have managed to get DX11 version running under Linux. From https://github.com/SaiyansKing/GD3D11/releases/ download latest .zip (in my case, GD3D11-17.8-dev3.zip).
MAKE SURE TO BACKUP YOUR System FOLDER BEFORE ANY OF THESE STEPS.
System in main folder.Last, put WINEDLLOVERRIDES="dxgi,d3d11=n;ddraw=n,b;dinput=n" %command% into launch options, this forces to use DX11 and fixes mouse input issues.
Compatibility Report
System Information
I confirm:
Symptoms
In game videos are not being displayed, sound only.
Reproduction
Launch the game and start the new game.
steam-1467450.log