This is a very compelling game until the content ran out. It took me a minute to figure out what caused death, and like others have said, more enemy variety would be the next thing to work on (and Shogun Showdown has lots of ideas for this).
But I really enjoyed it! I played to the end. The strategy involved in making blocks land in the best possible placement is interesting! (I would have loved some push back and swap positions attacks to play with)