Yes and no it seems, as in yes I have gotten to that room, but it only got the witch of dimensions NPC (that only ahve some dialogues, nothing of relevance really), the crystal ball to go to NG+, and a big pathway down that takes you to before I die.
View attachment 38053
So yeah only one big "doorway"(more like stairs) to the south and that is it, so geuss there is some requirement for the other doorways I haven't met yet? I am guessing the mirrors and the tombstone turn into those extra pathways you talk about?
Yeah sadly that part is too late, since most H-games tend to be WAY WAY too easy for my taste, I took the "non-cheating" option, so yeah can't do that on the current life at least