The Number system they used is a braille code and it hinted at the mounds of faces having empty circles for eyes as well as the walking stick leaning on the central pillar commonly used by the blind as well as the text saying lines  “Avoiding Stares” ” As if Unseen Souls try to escape” and the guide even having a moment of “Blind Panic” not only that there’s to the left of the center Pillar a fist closed on light almost as if he is extinguishing it leaving us blind in the dark using the “Screams of tortured souls and braille to guide us to the next room

the center column is # or the NUM symbol

the doors (From left to Right is 12, 15, and 05.

and I believe the correct door is 15 as it features a man wearing a Knight  helmet