From what I can understand from the mod description's machine translated ENGRISH, it has technologies you research to unlock the ability to craft all sorts of neat stuff - new meals, potions, more restful beds, stronger turrets, equippable tools that increase work speed, and WOW SO EDGY shadow-swords, made from harvesting the tormented souls of your victims. Idk, try it, see if you like it, maybe post about it here.