This is a highly impactful game: the pixel art style is haunting, as is the sound design and musical composition -- transitions of the musical composition leads to profoundly interesting moments. As might be well-known, Alx (the lead dev) suffers from heart disease, and the game communicates something of this experience.
Disasterpiece is a fantastic composer. His work on Fez is probably some of my favorite video game soundtrack work on any game ever. I remember hearing that he was working on Hyper Light Drifter when it was on Kickstarter and I was thrilled and while it's not as individually memorable (in my opinion) is still great work.
Really couldn't recommend it more.
https://www.youtube.com/watch?v=k1b9xKRC74E
https://youtu.be/U4FNBMZsqrY