I would say tense and uncomfortable because "it was undoubtedly hot" "he began to sweat" "began to throb in his ears" the sweat and heat makes it very uncomfortable also, the rumbling and throbbing sound makes it tense.
hope this helps :D
A. Literary
Verbal dramatic and situational are the other types of irony.
It soundslike it should be number 2
Who is speaking voice they related