In Act 5 of Shakespeare's "Romeo and Juliet," there are a significant number of metaphors and similes used, along with other literary elements like personification, irony and imagery.
In the opening lines of the scene, Romeo is discussing the pleasing nature of his dreams and commenting that he believes good news is coming his way: "If I may trust the flattering truth of sleep/My dreams presage some joyful news at hand," (Act 5, scene 1, lines 1-2). This is an example of personification.
While considering how to get his hands on some poison, Romeo ruminates about the poor apothecary's shop he's recently discovered. The description of the man and the store are chock-full of imagery:
In tatt'red weeds, with overwhelming brows
Culling of simples. Meager were his looks,
Sharp misery had worn him to the bones;
And in his needy shop a tortoise hung,
An alligator stuffed, and other skins
Of ill-shaped fishes; and about his shelves
A beggarly account of empty boxes,
Green earthen pots, bladders and musty seeds,
Remnants of packthread, and old cakes of roses
Were thinly scattered to make up a show. (lines 39-48)
Their discussion of the poison contains a few metaphors. In Romeo's request: "A dram of poison, such soon-speeding gear/As will disperse itself through all the veins..." (lines 60-61); in the apothecary's response: "...but Mantua's law/Is death to any he that utters them," (lines 66-67); and later in Romeo's comment about the payment, "There is thy gold-- worse poison to men's souls," (line 80) it is evident.
In scene 3, Romeo uses simile to explain how passionate he is about his wish to die and lie with Juliet:
The time and my intents are savage-wild,
More fierce and more inexorable far
Than empty tigers or roaring sea (lines 37-39).
Of course, the events that take place between Romeo and Paris in scene 3 are ironic because Paris believes Romeo is at the tomb to desecrate it, and as such, threatens to kill him. Unbeknownst to him, to die is the main reason Romeo came to the tomb, and Paris is going to be the one killed!
Literary elements are ample throughout the Act and the play.