Premise was nice! Though I wish there was more player control overall? Would have been nice if I could have been able to set up where the units where going to be, since I had some levels where the ranged attackers were the first thing the hero attacks.
The attack action also seems somewhat confusing since the units move around a lot while the attack is on, so my archers kept going closer to the hero even when their range should have been fine xD
Overall, game looks polished but gameplay could use some work