as elves, i completed lvl 18 with only one ground pound: when the king comes into the battlefield. From then on, you should only spam titans and angels. The angels will make the king stop ground pounds and the titans (forest guardian) will kill him
a lot of things don't work quite well, like the defend button for generals, if they get attacked they just stand there... also the forward and retreat buttons don't work
otherwise a good game
if you want to win: pick chaos desert and first clan magic should be decreasing the opponent's special. upgrade this and upgrade your attacks to max then upgrade the rest and you will win
still some bugs: Tirisfal Glades has no quests, and in the other lvl 1-10 area's i completed all quests, but it says in the achievements i didn't complete all lvl 1-10 quests
in challenge one on epic, my dragon likes to give full fury to one single already killed minor goblin, and so go forward very slowly, and then he decides to turn around to kill on minor goblin when he 'oops' got backstabbed by a black goblin ...