Pretty solid game. Just a few issues. The circles where you can put towers are often hidden behind the UI, the part which shows remaining turns, and the two triangles at the side when scrolling, and makes them unclickable. Also, they are barely visible on the snow levels. And there is no turn based strategy in here at all, there would be if there was an enemy for example that can take territories every other turn, but not like this.
Killing the big boss is harder than getting 6 stars on all maps.. Managed to kill the boss with 3 activations because I got lucky, and still got a defeat cuz one lousy soldier stayed alive.