A very interesting and well-executed idea. I loved the cardboard aesthetic. It's funny that the character gets crushed in different positions. The music fits very well too, excellent choice for a puzzle game like this.
Just a small bug—in the level with multiple cannons where you have to change their rhythm, after several attempts, the game froze on me. I had to restart. Luckily, you have the option to skip the level, but I couldn’t see how I did in the end. :/
Despite this, it was a great experience. Great job!