Played it till the end.
Gameplay-wise, I think this might be the strongest game overall; it gets you hooked quickly, and the mechanics are easy to understand. The art is also really nice, and there are some nice strategies you can employ. In the tutorial, it put a lot of emphasis on the counters; however, I did not see myself using them often, as the opportunity rarely arose to do so in the first place.
I think the game is a bit too easy, though. Maybe reducing the money you get could help, since I had a LOT of money, which made my heroes extremely OP.
The large AOE effects also do a lot to suppress the enemies, which does make the game quite easy in the later stages.
Other than that, the combat is very satisfying.
Overall: 8.2/10