This is a really cool idea that fits the theme really well! 

The hardest part was getting into the game. I thought the play text was a button so I clicked on It and it didn't work so I resorted to smashing random keys on my keyboard and one of them seemed to start the game.  You may want to consider making the play text intractable to prevent confusion.

The gameplay was hard. But the art, concept and implementation were so good. Great job!

The game concept was really interesting, but the gameplay was punishing. It should have been a bit easier. Good use of the tutorial being part of the game. Great job overall!