Solid game, the strategy loop is just enough to keep you going. I had issues with the loop tho, about when to go to shop and how to use your coins. And also AI getting stuck,
Viewing post in Invincible Pasha jam comments
I wanted the player to think, at the end of each round, "Did I collect enough gold? Should I go to the shop with this gold and buy an upgrade? Or can I skip another round without upgrading? I'll upgrade with more gold later." But since it's a jam version, once you understand the logic, I think you only need to go once after level 3. Thank you so much for your feedback.