Whoops, seems like I had a typo in the launch options and just uploaded the old file by mistake. [steam-488310.log](https://github.com/ValveSoftware/Proton/files/4278114/steam-488310.log) Thanks for having a look at it :...
The current beta version of the game doesn't crash; it works almost without a problem (it did crash once in a menu, idk why). The non-beta version crashes instantly on start (haven't tried without controllers though)