Steam Version of the game originally purchased for Windows. Using Fedora 30 and Steam client.

Default Steam version of Proton did not work, but setting Steam client to beta and selected Proton 4.11-2 worked without issue. Successfully reached the settings menu--which was not working, and completed the first two missions without further issue.

The game does not permit setting resolution outside of a percentage--stupid. If using multiple monitors, advise disabling all monitors except one then running the game or it will span all monitors.