I was excited to buy this but sadly it seemed to be rushed out without much internal quality testing and is riddled with bugs. It should have been released as an Early Access title instead of a full release.
I was able to progress in the campaign mode but for now I have shelved it until the bugs are sorted out - which the developers do seem to be trying to do as they are releasing new patches at a good rate.
What I have been able to play has been very promising (and fun) so I am not refunding it but looking forward to when they get most of the bugs fixed to try again...