IT IS DONE YEEEAH
https://itch.io/jam/7drl-challenge-2018/rate/230931#post-377498
I haven't been able to test it much so it probably needs some difficulty tweaking, but it does get Pretty Hard Pretty Soon which is kind of what I was going for!
Web Build available at https://neontropics.itch.io/demon-bathhouse-rl-web-build as well! (need to click full screen to see everything)