And then came the second attempt.
After repeating the same gameplay—which looked virtually identical—for over 30 minutes, I gave up.

Thank you for the video!
It looks like you got stuck on a rock the first time, and simply didn't make it to the next checkpoint the second time.
This was incredibly helpful—thank you.
For the post-game-jam update, I plan to improve the visibility of the rocks and add difficulty settings.
I apologize for taking up your time, but this was a huge help.