This challenge was suggested by robogamer5399 in a KZfaq comment. In it I have to get to round 20 on all adventure maps on hard mode without using turrets. I will however still be using yard turrets from rescued red ants as those can easily be used accidently and don’t have much impact anyway. I will also be using my old save for convenience.
Even though a lot of things didn’t go according to plan I still made it a few rounds higher than I needed to.