I really enjoyed the game. You did a lot in 7 days. The first time I couldn't defend myself against the enemies because it wasn't very clear where they were going to come from and I put the walls and ballistas wrong. I decided to try a second time, but already ignoring the tutorial because I already knew how to collect materials and what to build. But after that, I ran into the problem that I was hung up on the hint on how to deselect stones and there was no way I could get rid of it. I didn't have any stones selected, but the hint wouldn't go away. I tried selecting them first and then deselecting them, but that didn't work either. In the end, I didn't fulfill the requirement and I didn't get access to the new structures.
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Sorry about that. The tutorial is a mess as it simply saves the amount of selected stones at the end of previous step and looks for lesser number afterwards meaning if you had no selected stone it can softlock because it looks for negative amount. I did not realize that before now so I am truly sorry for that but also thanks for giving my game a try.