I can confirm this is not working. Results in Black Screen after the settings screen, has to be killed manually or it just sits there forever.
https://gist.github.com/lucifertdark/584c14275612e8e3c4a8070d428d8a02
steam-355660.log
Also tried after the recent update and with proton 3.7.8 beta without any result
After updating to elementary OS 18.04 the game worked fine!
proton 3.7x1 2018-10proton 3.7-6x1 2018-10proton 3.7-7x1 2018-10
Compatibility Report
System Information
I confirm:
Symptoms
I tried running the game demo and it did nothing beside downloading VC Redist for MS Windows and DX. Then i tried using Proton 3.7-6 and it showed me the initial setting screen but after clicking "OK") the game crashed. Same with Proton 3.7-7 beta.
Reproduction
Launch the game on Ubuntu 16.04 (i have eOS Loki - based on Ubuntu 16.04).