very good! even though the graphics weren't great, they felt clean for some reason, and the visuals were probably my favorite part about your game! i did not get to the boss however, because for some reason i keep accidentally pressing the back button on my mouse ;( i also felt that the dash was very convenient however maybe it could go a little further? i didn't like being slow when going from room to room especially if i went in a circle and lost my way. These things i point out are only the bad things, because if i were to explain all of the well made aspects of this game it would be a 4 page essay.
5/5 for the complete experience! if this feedback helped consider checking out my game :)