... who sends you to Puerto Rico to rescue Couch Captain Charles - Then back to Petros who then sends you to meet Annamaria at lighthouse - She sends you to meet Nathan Kell.
THIS is the part i missed, I never really met this Petros guy, i just got into prison when searching for him on Guadalupe. After that i think i saw him with Captain Dumski in the Turks port and went to the Lighthouse where i met Cuttler Becket, Davy Jones and got the Black Pearl, then i proceeded like Davy Jones said, i met Barbarossa and the two Navy Guys and then went to the secret island. Well it seems that by trying to get the most bug free quest route i instead got one with a major exploit
Life's a bit** ...