Thanks for the detailed feedback! Extremely sorry that your progress got reset. This game definitely needs a pause feature, unfortunately I ran out of time to implement it. Should've warned about it in the description.
I realized a lot later that the game became too hard, so I tried to reduce the difficulty by reducing the number of obstacles. The checkpoint range is a nice idea, didn't think of that. You can unlock that original harder level by collecting all four truffies, I included that in case someone wants even more challenge lol.
Once again thanks for the feedback and suggestions, it was really helpful.