TALK ABOUT MAJOR BALANCE ISSUES.
For starters i loved the concept of the game. It was original and fun at first. But once i realized how over powered the the enemies are and how pathetic your units are, the game ceased being any fun. It took countless attempts just to be able to beat tutorial level 3. Everything is way to expensive and stars arent easy to come by especially at first. Forcing someone to 3 star a level from the very beginning jsut so they can afford the most basic things is a little bit harsh. Games like this need to be built on. Like you have trouble passing a level but come back later once better equiped and you 3 star it.
All in all, a fun concept just horribly balanced.