The game turned out to be great in terms of gameplay. I see that you wrote it in SFML.
I didn't see the narrative (even after repeated playthrough), the graphics are simple but clear, the audio feedback and music are not bad.
The game is gameplay-oriented, similar to Rider, but plays out the countdown timer in an original way.
PS: I noticed that you save achievements in text form, and this is the case, but it is easily modified. A binary ASCII-like record would be better.