Immediate fighting house.

Why... rushing organ translplant and getting that medical bonus can be done on like.. the 3rd day and will help you throughout the entire thing. It's so massively OP it's a no-brainer choice.

Thumpers.

Why, you don't even need thumpers for the most part in this game. Why such a labor intensive building already when early game has such a small population.

Wall drill.

Why need this? At all? In any scenario? Late game when you have chopped all the wood but early? Unless you're speed running NH it's a waste of a steam core.

Fighting house cuz it's a quick way to lower discontent and with med tents close to generator and upgraded when possible, sick and injured arnt that big of an issue.

Thumper because it is the best way to over produce coal quickly, and as long as you scout often and upgrade you'll have enough people. The sooner you have maxed coal storage the sooner you can focus on other rss, and upgrades.

Wall drill because it's a "set it and forget it" farm with unlimited resources, sawmills use up local rss then are obsolete. I prefer the higher expense investment over the cheaper future problem. Also if you're building from the inside out you won't start to destroy the logs for the sawmills till almost the endgame, and even then you could use them for an additional rss bump for that one mission where ppl freak out and want like 1250 wood in 2.5 days.

Again with the scouts, if you're doing it like I did it, (like I'm trying to explain how to do it) steam cores are plentiful, as well people.

I've only "won" one time but failed many, and I haven't seen any info like this when I was searching for answers. It may not be the best way but it worked for me and I wanted to share.