The setting is a secret room "Within the wall thus exposed by the displacing of the bones, we perceived a still interior crypt or recess...for no special use..." Pg 5 This is a secret room room in the catacombs of the castle where Fortunato got buried alive and most of the story takes place
The protagonist is very emotionally cut off "The Montresors, were a great and numerous family"Pg 3 This shows that he was emotional cut off because he doesn't have any family left and he is only talking to a dead man bout it
The story shows a very heightened sense of drama "I had fettered him to the granite." Pg 5 This shows that Montresor is being very aggressive towards Fortunato
How long have you had that cough?
There is an ancient curse lingering in the air "Nemo me impune lacessit" Pg 4 No one attacks me without impunity is what the quote means and Montresor is saying this to curse fortunato for what he is about to do to fortunato.
Nemo me impune lacessit
There is decay in people "We passed through long walls of piled skeletons" Pg 4 This shows that there is decayed/dead people in the story.
There are unexplained manifestations "how long have you had that cough... Ugh, Ugh,Ugh,Ugh,Ugh..." Pg 3 This shows a manifestation because as soon as he said how long have you had that cough he starts to cough.