I'm on the Linux version of the game, and so far it looks very professionally done! I have an issue with the sound though, it has some random noise. I captured it on video just for you: https://raw.githubusercontent.com/fyfyone/bugreports/master/sounds.webm
Thank you for your feedback!
The noise sounds like the sound buffer isn't keeping up. This is difficult to diagnose though. Could be that PulseAudio is causing trouble. Maybe check your audio settings and try different configurations.
The missing first mission is a known bug that will be fixed with the next update. This can happen in rare cases when you load a game that you have saved without even starting the first mission.
It's really difficult to tell why this is happening for you. It's the same game running in the same engine with the same settings. I'm a Linux user myself, and I don't have any issues. And no other Linux user has reported anything like it, so unless we can find a way to reproduce the noise issues there's not much I can do. What sound hardware are you using, and which Linux distribution?
I've had the issue too every now and then on Mageia 6 x86_64, using PulseAudio 10.0.0. It's usually only for a few seconds and then things get back to a working state. IIRC I had a similar issue recently with another Godot game, but it never happened in past years, so I suspect a system-specific issue, maybe due to a kernel update or similar. I'll make an upstream bug report if I found out how to reproduce it reliably, though it might be fixed in Godot 3.0 already.
