Man, what a fun game! My first Floor 16 run. From floor 12 on, it's just more of a grind and loses a little bit of the fun, because you don't have that much variance on enemies, mechanics and it turns into an endurance game of beating up damage sponges.
I would recommed the author to develop more boss variety, instead of new items and make so each run you go against a different mesh of 3 bosses, with scaling levels of difficulty. The floor 9 boss doesn't fit that much into the lava pool environment, so maybe a red lizard/dragon with burning powers would be awesome!
I'm impressed with your consistent updates, and keep up the good work! Pretty fun game, i hope you make a heavy weapon that uses the bricks as a source of power, or maybe a shield that does it (or both!). <3