An example of verbal irony in "The Cask of Amontillado" is when Montresor meets Fortunato. Montresor shakes his hand and states, "My dear Fortunato, you are luckily met." This is an example of verbal irony because Montresor is actually planning his death while saying he is lucky.
*cough* *cough* *cough*
An example of situational irony is Fortunato's name. When saying his name it reminds you of the word fortune which makes you think of being fortunate. In the end Fortunato dies which is very unfortunate.
We as the audience know why Montresor killed Fortunato where as Fortunato has no knowledge of the insult he made. Montresor explains, "... but when he ventured upon insult, I vowed revenge."
No one will ever find him here with no smell protruding.
An example of foreshadowing is when Fortunato states, "I shall not die of a cough," and Montresor responds by saying, "true." This gives the audience the sense that Fortunato will die but not due to his health.
Another example of foreshadowing is when Montresor states that he, "vowed revenge," and he would, "punish with impunity." This gives us a sense of a drastic plan to get revenge.
No one messes with me!
A third example of foreshadowing is when Montresor subtly mention that the walls are covered with a chemical used to preserve bodies. This hints towards the fact that this will be the place Fortunato dies.