Switching to windowed mode helped me just a little while. After couple transitions between areas, crashes started to occur again. I don't have external monitor and I only have one GPU ("Intel Iris 1536 MB"), so aforementionted fix is not going to work for me.
Developers, let me know how can I help. I can send you logs, run test code, or do whatever is needed to get this fixed. This is way too great game to prevent Mac users to enjoy this.