The game would not launch at all with Proton 5.0-9, but it seems to launch fine with any version below that. However, I tried everything listed in the previous reports and I could not get the game working.

The game boots up to a textured black screen, which is clearly meant to be the main menu as I can hear menu selection sounds by hitting the arrow keys. Pressing enter on one of the options seems to start the game, however the screen remains black and I can only hear the sounds of the game.