Which literary device is used in describing young Goodman Brown's feelings when he sees villagers in the forest? connotation flashback irony tone

The tone of the feelings expressed by young Goodman Brown is the literary device. When he is all alone in the forest he starts to walk back and every person he passes seems evil to him. The dark and mysterious feelings expressed by him gives a dark tone to the story

Tone i think im not 100% on it