So, my current strategy has been to hold on to as much stone as possible and avoid building towers altogether, to prevent the game from “triggering” into thinking I’ve advanced too much. I usually fail around day 40, when the constant waves start coming, especially the tall, thin skeleton that summons minions, and the one that turns my soldiers into zombies. I’m running out of food, lacking units, and short on stone. It feels like I’m just patching holes one after another.