I defeated all the enemies, except the king of cards. The game is playable, but not very engaging. The only choices I had were the sequence of playing cards, and whether or not to merge them. I liked some of mechanics of choosing the sequence, for example it was important to play the king before the queen.I think the game would be more interesting , if you had for example five cards in hand, but could play only three. Then a player would have more choices to make.
Also, I'd like to point out that the drawings are decent. They are simple, but they do their job well. And the color palette is good.