I stopped at wave 31: Boingy Domination. I think I could have walked away from my computer. ;)
This was a good time. I think an energy mechanic to power your turrets may be needed as the game progresses. Or if you want to lean into the chaos: we could limit the overall number of turrets and have to shoot the old ones to upgrade or remove them.
A larger game might have you unlocking new turret types and other levels.
This is a fun start to a new twist on TD.