The Pilgrim
Deity
i could only place one city next to a mountain for the observatories, my start was more desert than anything, do you just try get plastics asap then?
You need to hit all key science techs (Education, Astronomy if you have multiple cities/capital by a mountain, Scientific theory and Plastics as fast as you can. Of course you can't just beeline them and will have to take detours but the goal is to waste as little time as possible on other things. If you can steal techs from AI - do it. Often I totally ignore bottom part of the tree and go something like Education - Acoustics to unlock Rationalism, Metal Casting + Machinery for workshops and Ironworks, then beeline for Scientific Theory and straight for Radio, then Plastics. I let spies to steal the rest. You might as well burn a couple of scientists to speed up Radio/Plastics or even use Oxford. Being first to ideology is pretty massive.