it's good
it just has a few flaws
sometimes the game is a bit slow it should have a speed up button.
the gaul's troup's great strength is also their weakness they hack trough one line of enemies then just die at the base because of their low defence (especially level 4).
then with the gaul campaign level 4 the difficulty jumps up because you rely on your money gatherers and they go quite far out so its hard to protect them when the boss comes out.
and the abillity to controll your units more would help.
and there should be a free play mode choose the enemy difficuly/level/side etc. it would make the game have way more replay value.