I like the tone and overall aesthetic set by the art and music. The per-level timer is an interesting take, and could very well play into a unique pressure to the environment, such as the ghost coming to chase you in Spelunky, or Pizzaface from Pizza tower, Metroid Dread's Emmi's etc. Given some more time in the oven to build a castle and dungeons with these tools, I can see it hitting a nice MetroidVania feeling of "the world is a character in itself."