So now here's an attempt for the rooms:
Format is: Room (Number): "spelling mistake" corrected word
Room 1: "sihilouettes" silhouettes
Room 2: "human-eqsue" human-esque
Room 3: "mightist" mightiest
Room 6: "barrells" barrels; "flamable" flammable
Room 10: "alion" alien
Room 11: "granfather" grandfather
Room 12: "twisth" twist
Room 16: "non-rhtyhm" non-rhythm
Room 18: "Retrun" Return
Room 21: "Retrun" Return
Room 22: "iconagraphy" iconography; "Retrun" Return
Room 24: "Retrun" Return
Room 25: "Retrun" Return
Room 26: "Retrun" Return
Room 27: "faught" fought; "Retrun" Return
Room 28: "Retrun" Return
Room 29: "Retrun" Return
Room 30: "Retrun" Return
Okay you see the picture. The rest of the Mausoleum is filled with the Retrun spelling error, so I'm going to disregard those until they come up again after the Mausoleum.
Room 36: "nairs" nails
Room 38: "treasuer" treasure
Treasury: I'm not sure if "vineful" is a word so I'm just mentioning it here; "every since" ever since
Room 42+43: "aarokocra" I think it's aarakocra . Also both rooms have the same description
Room 50: Repetition of room 42+43
Room 54: "Retrun" Return
I'm now taking a break for lunch but after that I'll look over the next 40 rooms and the Bestiary!