1) Hamlet contains many elements of an Elizabethan revenge tragedy, including a ghost demanding revenge for a murder, Hamlet's hesitation to enact revenge, and his ultimate revenge through killing Claudius.
2) The play follows the typical structure of exposition, anticipation, confrontation, delay, and completion.
3) Hamlet uses various schemes to confirm Claudius' guilt, including staging a play mimicking the murder and observing Claudius' reaction. Hamlet ultimately enacts revenge on Claudius through poisoning him.