First of all, of course the story is awesome. I totally understand the alchemists addiction :D
I really like the artstyle. Its very smooth and the Ui is nice.
I normally dont play factory building games, but the Tutorial explained it well on how this game works :D
The Gameloop after it is nice too. The waiting after the tutorial/ in the battle for the exit felt like it could have been shorter tho.
At first i didnt understand that the alchemist makes the shadow guys with the gold and potion and that thats the point of his factory building plan. (Atleast i think it is?)
I think it might be nice to explain how the alchemist plan works in the beginning too. Maybe only a sentence so the Player directly knows why and what he is building factories for.
But in general its a great game :D