Criticism -
There could have been a couple more sound effects and an indicator of where certain pieces can go/capture you from when clicking on them would be a nice addition as I sometimes found myself making dumb mistakes because I forgot how certain pieces moved.
Support -
The game was extremely innovative and creative, chess is definitely not the first thing that would come to mind when hearing the theme. I also liked the puzzle elements and the design of introducing each enemy, it really helped explain how each one worked in the context of the game.