Hector was a pain in my ass...
I was getting killed over n over by hector in the battle with achillies n the combat challenge. N then I figured out how to beat him. 99.99% of the time it works. When u get to the third stage of the fight when you have to parry the parry you'll see rt pop up n then u gotta hit him. Well I started watching the circle n another circle comes along. What I was doing was waiting for that second circle to just about to line up with the overall lock on circle n I would hit him everytime.. Sometimes I would push it early n he would block again. But try this out maybe it will work for u as well.