This game does not work in proton. Here is what happen:
In official proton 4.11-10: It shows initial screen, for like 1 a second, then it crashes.
In proton 4.19-GE-1 (Last version to have mplat libraries included): Initial screen and initial intro video works, then it crash before arriving to main menu.
In proton 4.21-GE-1: it doesnt even start, it says "file not found"
proton 4.11-10x1 2019-12proton 4.19x1 2019-12proton 4.21x1 2019-12
For me, it got to the intro and looked like right as it was about to show the menu, it crashed.
steam-324570.log
System Information: https://gist.github.com/d10sfan/cd6abd90b2f5c549f350b9b878c9d300