Second attempt - tutorial forces me to go into inventory and choose healing potion, but I'm not damaged, so I can't choose it. Or for some other reason. I'm stuck in inventory. Not fun.
First battle, I choose twice yellow, once violet and twice blue (how should I know that blue and violet won't work?), battlefield is cleared, and nothing more happens. We stand there and watch each other. Not fun.
 "Dangerous adventure"){kind=icon}
 "Endless Zombie Rampage 2"){kind=icon}