Nice idea! I like going into the dungeon to get scrap, and craft stuff out of it, to resell later. It could follow a gameplay loop similar to Recettear or Atelier series. This is a great idea that would work really well in a crawler. The skeleton is rad. The gun sound was satisfying.
However, as other pointed out, the move speed is really slow and the lack of variety into the dungeon structure/texture makes it's very hard to orient yourself.