Kiborg

So I am using GOG version on Ubuntu 17.10. I did all as instructed but it doesn't look like the mod was applied. There is no CE on upper right of the launcher. The files need to be extracted to /GOG Games/Xenonauts/ Right? Also the game has no sound and crashes after only few minutes. Can somebody offer some advice?

Thank you for your very detailed and informative answer! Considering your answer I am thinking about just waiting for Xenonauts 2 in hope that it will work better on Linux.

I am considering buying the game on Steam sales but I am a bit unclear how well it works on Linux. Could people running it on Linux please tell me how well it runs for you? Thank you!