Thank you so much for the advice. I've only recently started studying and developing games in this genre. For example, the upgrade tree is something I've tried doing for the first time.
Regarding setting a limit on the upgrade rate per minute, I didn't actually set it beforehand. But I thought about the games I've played, and they actually allow upgrades much more frequently. So it's a very good idea to set it beforehand. 😊
Regarding the enemy's movement, I initially planned to use Astar, but it didn't have the time. My apologies.🙏
Anyway, I'd like to develop a PC version of the game (using a different engine). Your advice has been very helpful. I'll make changes after this jam session is over. I hope you'll continue to provide feedback. 🙏🙏🙏