S2: Durst Basement

General Summary

Session begins as party descends down the basement stairs of the Durst family estate.
There is a feeling of being watched constantly within the basement.
Party splits up to explore and find:

the empty crypts of each Durst family member, and the crypt of Elisabeth Durst which was filled with a swarm of centipedes.
a group of frenzied ghouls unleashed within the basement that the party took care of.
dining room
living quarters for 5 people together with loot and a well in the middle of it
altar room dedicated to Strahd with the feeling of being watched intensified, room was filled with skeletal bodies tied to the walls.
another dining room

Lastly the party found an underground master bedroom with the hanging body of Gustav Durst and the undead Elisabeth Durst in the form of a ghoul that still has memory. Elisabeth with her guts spilling out kept mumbling that her immortality is a gift and was very afraid of people taking it away. She still loved her husband as she called dearly to him. Upon death her last words were "My lord I see darkness". In the room there was also a suicide note. In the letter Gustav blames his wife and his weakness for everything, as if he was not guilty of anything.
The last leg of the exploring leads the party to the deep underground, where they find a supply/reagent room for some sort of witchcraft, a dungeon that had a secret door, and a slide even lower to some watery area behind a portcullis.
The secret door pushes open as it reveals a ritual chamber:

Inside the chamber the shadowy figure of cultists appear as they chant "He is ancient, he is the land" and then follow with "One must die!" three times.