Congrats on your first published game!
Really interesting concept. I liked the idea of exploring the dungeon and finding new items in the rooms. That added a nice sense of discovery. I didn't find the combat very fun, though, so I ended up avoiding it after the first room. Maybe adding some variety or more satisfying feedback could help make battles more engaging.
I really enjoyed walking around the town and talking to the NPCs. The worldbuilding stood out to me, especially the parts about the guild and the NPC who seemed interested in studying the dungeon. Adding more story elements or character moments as you go through the dungeon could make it feel more rewarding and help with the sense of progression.