Hamlet

-Themes: What separates hamlet from other revenge plays is that the action we expect to see, particularly from Hamlet himself, is continually postponed while Hamlet tries to obtain more certain knowledge about what he is doing. 
The mistery of death: In the aftermath of his father’s murder, Hamlet is obsessed with the idea of death. He ponders both the spiritual aftermath of death, embodied in the ghost, and the physical remainders of the dead.  Throughout, the idea of death is closely tied to the themes of spirituality, truth, and uncertainty in that death may bring the answers to Hamlet’s deepest questions.Hamlet’s grief and misery is such that he frequently longs for death to end his suffering, but he fears that if he commits suicide, he will be consigned to eternal suffering in hell because of the Christian religion’s prohibition of suicide.
The nation as a diseased body: Everything is connected in Hamlet, including the welfare of the royal family and the health of the state as a whole.There are explicit connections between the moral legitimacy of a ruler and the health of the nation. Denmark is frequently described as a physical body made ill by the moral corruption of Claudius and Gertrude, and many observers interpret the presence of the ghost as a supernatural omen indicating that “something is rotten in the state of Denmark”.
Symbols: symbolism is a crucial component in the play of Hamlet because it develops the theme of death through various symbols. Poison proves the theme of death because many of characters die from it. Hamlet's costume changes creates the theme of death because he continues to wear black clothes till he goes mad. Ophelia's flowers demonstrate the theme of death through the handing out of symbolic flowers after her father past away. The Ghost shows the theme of death because of his immortal state of being and his revolution of the play. The Yoricks skull develops the theme of death because it is the first time Hamlet sees death physically  and it changes Hamlet's views on death.