Gives me vibes of both Gregory Horror Show and Return of the Obra Dinn (two of my favorite things). Platforming is a bit janky but it vibes with the retro aesthetic. That said, I will say that the black orb at the end is a bit of an annoying hindrance: I don't appreciate having a quarter of my screen blocked off, especially when it's right in the center of my view, and the fact that it collides with objects makes it almost impossible to traverse stairs once you're stuck with it (I figured out a workaround; you can jump up them backwards). On the upside, it also functionally extends your jump range, so reaching the area with the barrels is a little easier.
I seem to have run into my own problems with the final shop: I went there with two gold coins and I couldn't buy the bass! I had to come back with exact change, which necessitated another roundabout trip.