The adventures that Perseus encountered are:

when he tried to ask the Three Gray Women for the location of the nymphs to be properly equipped for his dangerous adventure ahead

When he reached the place the of the Gorgons where he fought and killed medusa and then behead her to bring it as proof that he succeeded his adventure

and on his way back he fought the Krakken (Sea God) to saved a fair young maiden named Andromeda

and when he fought Phineas's 200 men at his with Andromeda there he used Medusa's head