The latest demo version is out! Apart from minor fixes and tweaks, I'd like to think that this will be the last demo. The next step is the full version. I'm aiming for the end of the year 2020. But let's see just how it goes... I'm not good with these dates and deadlines.
I'd estimate that the new demo is about double the size of the last one with 2 new playable characters/classes: The doctor and The mechanic/engineer.