Short Answer 
The theme of revenge is central to Shakespeare’s *Hamlet*, driving the narrative as the protagonist grapples with avenging his father’s murder revealed by the ghost. This burden leads to Hamlet’s internal conflict and moral dilemmas as he contemplates his actions against his father’s killer, Claudius.
Step 1: Understanding the Theme of Revenge
The central theme of the play Hamlet is revenge. It sets the tone for the entire narrative, presenting morality and consequences of revenge as significant motifs. The protagonist, Hamlet, is faced with the challenge of avenging his father’s death, which drives the plot forward and deepens the characters’ complexities.
Step 2: The Ghost’s Revelation
In Act 1, Scene 5, Hamlet encounters the ghost of his father, which is a pivotal moment in the play. The ghost reveals the truth about his murder and makes it clear that he desires revenge. The ghost’s words, ‚ÄöAuSo art thou to revenge when thou shalt hear,‚ÄöAu emphasize the urgency and necessity of Hamlet’s mission to right this wrong.
Step 3: Hamlet’s Burden of Action
Hamlet is now faced with the heavy burden of avenging his father’s death. He is not only tasked with hearing the ghost’s lament but also taking decisive action against Claudius, his father’s murderer. This complex emotional and moral obligation propels Hamlet into a deep internal struggle throughout the play, showcasing the weight of his quest for justice.