Maybe Fortunato laughs out of shock or a sense of irony. It might also be a sign of his inability to fully comprehend the situation he's in.
Fortunato's laugh at the end could be a complex expression of various emotions. It could be a desperate attempt to mask his fear, or it could be a strange response born out of a moment of extreme stress and confusion.
Maybe he's just relieved and happy that everything turned out okay in the end.
Fortunato ends up being confined in a remote corner of the catacombs, left to his fate. There's no way out for him, and he's essentially trapped in a hopeless situation.
Fortunato could be experiencing a combination of shock and anger at the conclusion. He's stunned by the betrayal and furious at his own naivety.
Fortunato met a tragic end. He was walled up alive by the narrator.
Fortunato meets a tragic end. He is left trapped and ultimately dies in a dark and damp place.
The name Fortunato is significant as it creates a contrast between what one might expect from the name and the character's fate. It also helps build suspense and mystery throughout the story.
Maybe the bully laughs because he thinks it makes him look tough and in control.
It could be a plot device used to create shock or add a complex layer to Naruto's character. Sometimes, authors take creative liberties to explore unconventional aspects of characters.
It ends when the main conflict is resolved and all loose ends are tied up. That's just how most stories work.
It's hard to say exactly. Maybe in a particular context or story, 30 has been assigned a symbolic meaning representing the conclusion.