Hello you have made a really fun game! It had taken me quite some attempts to reach the score of 100 - and my reward was going back to school, nooooo !!! (jk). In all seriousness, the gameplay was really fun and I have enjoyed digging my brain into it. I noticed that you used a different font for the UI buttons as you used for the text in the tutorial and in main mode - I think a consistent choise would make the UI look much cleaner (I would prefer the UI from the main game). I also noticed that the music (which is really cool and fits the game) takes a bit of time to loop once it comes to the end - I think just shortening the sound file could solve the issue - but I understand the problem as in my experience game engines generely take a bit longer to loop a sound as when the game is build.
Overall I really enjoyed playing your game and think that it is a wonderful entry!