That's about as far as I can go. I was still alive. barely
Don't use shield and life. The best way I found is to end up with about 5-6 slots of attack and the other 10-11 life. But there's a catch. You need to gradually turn the balls into the green ones.
you can change the balls during a game? I thought once you bought a ball you were stuck with it until a new game
You can. Anytime you are in shop you can right click an existing ball and that sells it for 3$ or so.
I play with lots of shield and life and low attack so that I can grind for coins
