A lot of cool mechanics packed in here! Cards powerups and enemies that move like chess pieces in real time have a lot of potential, although sometimes it felt like a lot to keep track of. Maybe introduce them more gradually and have level design focus more on each mechanic?
Great use of the art assets, you chose ones that were not so obvious and combined them very well.
Also, you really aced the "game feel" aspect, the animations and sounds are great in this. Breaking blocks feels very tactile, and the telegraph on enemy chess piece movement is a great addition.