By the way, just some feedback that I imagine I would probably find interesting if I were the developer.
The inclusion of the golems, and being able to control them, was a major selling point for me, there's just something about harnessing ancient technology, particularly the kind of mystical kind that, at least to me, just feels good, plus they feel sort of, special.
It reminds me sort of an old-ish game called Spellforce, where you had rune warriors, and almost every one of them was human (in the first game I think they were), but later there were a few special units that were not, my favorite of which was the blades, which were these magical/mystical construct enemies that usually served as the elite units of your enemies. 
Or in final fantasy tactics, where you have the normal character races etc, but there's a special character you can unlock through a quest called Construct 8 or Worker 8, "It is a robot from the days of Saint Ajora Glabados" So basically a robot that uses lost/ancient technology, similar to your golems.
I love that in games, unsure why, but the golems in this serve a similar function.
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Very interesting, I've actually always really liked the 'ancient recovered technology' concept myself so I understand where you're coming from.
I don't know if you found them but there are actually two other 'ancient technology'-like items in the game. Although, they're a little harder harder to find than the golem cores.