This is very similar to what I thought I should try sometime with my strangest dreams. I had a lot of bleak, musty, dilapidated homes and buildings, or fluorescent bulb hallways that felt like the backrooms. This may not have had any goals or collectibles, but the execution of the dream-like experience and the randomness that dreams can have was very familiar and I'd even say accurate.
I was especially impressed with your level of detail for each scene. It felt like there was the right amount of polish. The one aspect I didn't care for was the heavy gray dithering pattern. Just a bit too intense for me.