I don't like map kiting
Also, it's about pushing the limits.
I'm level 40 with my warrior, I want to finish that first, at least I'll see if I can beat gremlion with griffins. I'm pretty sure the 2 stack of vampires will own Baal and the big lizard.
After that I'll see... I also have a plan of trying the paladin class with level 1-2 units only (without any other constraints, except "no map kiting").