I love this game! Personal note: I love the ancient times. Rome, Greece, Persia and the like. So many interesting stories and personalities. So that was a definite plus for me.
The art is simply awesome. Love the art really. Then the music selection is also nice. Really adds to the atmosphere. Then there's the humor that you added. That's a plus too. Then the gameplay. I really like how you introduced branching upgrades. Kinda like Starcraft 2's upgrade system in the campaign. So there's still the strategy of how you want your units.
Overall, I love it. 10/10 for you my friend. I'd definitely play this again and again.