This is an example of verbal irony because we know that Montresor wants to kill Fortunato. As a result, one wouldn't consider Fortunato lucky to meet Montresor.
The thousand injuries of Fortunato I had borne as best I could; but when he ventured upon insult, I vowed revenge.
This is an example of situational irony because Fortunato means "fortunate" or "blessed" in Italian; however, Fortunato got walled in and, thus, killed by Montresor.
He had a weak point - this Fortunato - although in other regards he was a man to be respected and even feared. He prided himself on his connoisseurship in wine.
An example of dramatic irony occurs when Fortunato asks Montresor if he is a Mason or not. Montresor replies, "Yes"; however, we know that in reality, he isn't.
The cough is a mere nothing; it will not kill me. I shall not die of a cough.
This is an example of foreshadowing because Montresor tells us that he will revenge for what Fortunato did. As a result, we can assume that Montresor will kill Fortunato in the narrative.
This is an example of foreshadowing when Montresor tells us a weakness of Fortunato. This foreshadows that Montresor will use wine to lure Fortunato into the catacombs and, thus, murder him.
This is an example of foreshadowing because it foreshadows that Montresor is going to kill Fortunato. Fortunato claims that it won't be a cough that kills him and Montresor agrees to this. As a result, one can assume that it will be Montresor who kills him.