Game plays pretty well, lots of fun to slowly figure out strategies. Some enemies could really use a tooltip that explains their special abilities! Desolator, for example, appears to discard one card form your hand every turn, and necromancer occasionally summons more enemies. I had no way to know this or plan for it until it happened.
I've also encountered a bug where the stairs to leave the arena don't work, and one where shops can't be accessed. In both cases the game throws the error message "ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index" Both of these only happened when I was playing as a fairy.