This was a great entry! I have some issues with audio levels as some sound effects could end up being much louder than others. I also feel that the player movement could use a little smoothing on its motion.
Most of the visuals are very well done; I personally wish the stages had a less aggressive pattern of movement. That’s about it for the negatives, the presentation here has very little in terms of issues and it is a very readable game.
The concept is of course the real star of the show, both in story and how it actually affects gameplay. I wish there was a category to represent how much I appreciated the use of dog.jpg, but I’ll just tack it onto Story for now.
I cleared the game once only doing the upper floors, then once more deliberately going closer to the Cursed zones to find the person I missed; I wish there was a better indicator of how closer you are to the two realms as I had to blindly guess how low I was going. I would also recommend setting the HUD scaling so that the game is playable in WebGL’s iframe view as opposed to needing fullscreen enabled.
Most of my feedback is just nitpicking for future releases should you continue the project; you did a good job with this.