I have played about 3.5 hours of this, and having now rebuilt the second town I'm somewhat less enthused about the game than I was before I saw it, because I was hoping this was where the game would open up; instead, it seems to be largely more of the same.
The production lines are very simple, as are the combat mechanics, and so I had hope that once the tutorial ended time would begin to progress without me clicking the "end day" button, and therefore the meaningful gameplay decisions would be found in how I chose to spend my time. So far the tutorial has not ended, and although the undead are becoming tougher I still have unlimited time to prepare for each night's assault by building turrets and improving my heroes' equipment. This makes babysitting production (they're VERY slow when you aren't directly managing them, even with quite a few workers per building) feel mostly like a chore.
Some things feel too simple. The first town produces food, but you only produce food to complete orders from merchants: your own townsfolk and heroes don't seem to eat anything. At one point a character exhorted me to take good care of my employees, but as far as I can tell they don't have any needs, and there's nothing I can do to improve the quality of their housing, etc., except insofar as I care whether it looks nice.
Maybe it will open up soon, or maybe systems will be more interesting later in Early Access; for now, I'd give it a pass.
Protags who do this would normally also spare henchmen who were incapacitated or surrendered, right? Those 7,455 henchmen who died all went down swinging. Accepting the villain's surrender is only notable because for some reason all of their underlings were fanatics who fought to the death.