Don't worry Persues, we'll be with you every step of the way.
#3 Tests and the supreme ordeal
Persues journeys to kill Medusa, as the "best of gifts" for Polydictys
#4 Reward, journey home
The best of gifts
Hermes and Athena and perseus's aids , Hermes gives him a sword to slay the Medusa and Athena gives him a shield so he doesn't have to look the Medusa in the eyes when he kills her.
#5 Restoring the world
Perseus faced two tests while journeying which were, getting the information he needed from the gray women, and killing the 2 gorgons and the supreme ordeal was perseus slaying the Medusa
Medusa's head and Perseus wife Andromedas are the rewards from the journey, he also faces another conflict before he can get Andromedas, which is slaying the sea serpent.
Perseus brings the Medusa to the king and turns him and his people to stone, he journeyed to take part in king Larissa's athletic contest, Acrisius died. Perseus and Danae"s troubles came to and end, and Andromedas and Perseus lived happily ever after.