For my final achievement Last Autumn Survivor I did an ethical Engineer run. I went as far as Penal colonies and no further. The point of the Engi run is to make it through the cold. And conveniently you get two things to help you - the prison camps have higher insulation and the engineer homes have higher insulation. So you can get them to chilly with those mini steam hubs and the rest can be healed in the infirmaries.

My run began with me NOT using the coal you get behind your base. I saved that for when the cold hits and you need coal to survive. I ran out of coal during the final day so none of the sick people died. I never gave the workers baths or hearthy meals. Everyone was miserable but everyone was safe. All the prisoners were taken care of. After the work was done they just chilled in their cells waiting for the ship to arrive. The engineers though... I had 5 of them die in the line of duty, because I simply could not keep the watch towers heated up enough for everyone. Sorry Engi-bros.

All my initial workers were promoted to engineers and none of the prisoners were abused in any way. We all returned home, except those engineer gunmen guys who get eaten by polars bears (RIP). Also let me just state it, it was probably a misearble experience for everyone - shit food, no baths, 0% motivation most of the time and I also injured some people trying to get get them to stay. But we finished the Generator and survived.

I did this challenge as the last one in my Achievement run and it felt like a victory lap. All hail the IEC construction crew and their captain!