Make an overarching thesis about Hamlet off your class notes. So... Hamlet is a play about [something here]. And then develop 3 philosophical sub-ideas off that - remember the rubric asks for your own PERSONAL READING of the play.
So for example, my reading is 'Hamlet is a play about the search for truth in a world of shifting values.' And then I develop that with 3 'ideas' which supports that reading with detailed textual analysis.
So develop that reading first and write about it. And then know that reading really well (I pretty much vomited my pre-prepared reading onto the exam paper, twisted it to the question and got full marks). But also, do some 'theme' maps. But really (this is the worst advice ever sorry), know the play fucking well and have the reading as the back-up. They can ask you on ANYTHING. Be prepared for a shocker, worst-case scenario.