Hamlet acts 1 and 2

In the last acts of Hamlet, Hamlet starts acting strange. This may be a part of his plan to get revenge on his uncle. This also might be because the news of his father being murdered has struck him very deeply because he loved his father so dearly and to know that he was brutally killed though he did nothing wrong, makes Hamlet very angry. Hamlet comes up with the plan that he will have people act out a play where his "father" gets murdered. He is hoping for a reaction out of his uncle which will show that he is guilty of murdering Hamlet's father. The fact that he is going crazy may be because he truly is crazy or it might be part of his plan for revenge. When making the guards promise not to tell anyone about the ghost, he also made them promise not to say anything if he started to act strange. I think this is part of his plan because he wouldn't have known to tell them not to worry about him acting strange because he wouldn't have known that he would eventually start acting different. But since he told them, it indicates that he knew something would change.