Pretty nice experience! I liked the pixel art a lot and the overall map layout. Maybe some shortcuts would have been nice, but that's just nitpicking! The only weird thing I noticed was in the fire cave: is the player supposed to be able to walk everywhere? I also liked the soundtrack, although the damage sound effect could maybe be a bit less loud.
Overall a very good job, well done! Nice feeling of exploration, I got 30 tiny books in about 16 mins I think? I died once in the fire cave, not sure how, but I think I wasn't supposed to walk on the light part of the map.