Fun Game, the demo isn't very balanced though. Stacking Poison + Purple potions is OP (super easy to acomplish). The only thing that beats it is insta-kill blind sword + purple potion stacking (though this is harder to pull off).
Also it would be good if you could play beyond 10 wins. Sometimes you feel like you've just gotten your build off the ground and then it ends before you can see it play out.