4 stars: It's a great game in general. Switching your deck to suit the battle is fun, but the fact that you have to go in and lose just to see what the enemies are immune to is tedious. The different classes are interesting and unique, and makes it worth playing the game multiple times. An easy mode would be nice
3 stars: It has a great concept of card game and has good balancing of cards. However, I think that majority of the game must be bought in order to continue the campaign. I suggest that you give more parts of the game for free because the free content is really lacking, and its like a free to try game only, not free to play.
2 stars: Way too dependent on luck. In most other card games you at least have a way to double-try for the cards you start with. Not here. If you draw three potions from the start, you are done. Also there is no way to draw more cards, at least in the beginning, so you are left with that one drawn card per turn.
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