Hi, I was able to successfully complete all naval contracts on AC4 Black Flag (including the last one on Serranilla) but the achievement did not unlock. On the achievements app it shows that the requirements for this achiev. are 100% met but still it is blocked. The game itself show everything as completed, because the memories are 100% complete and I got all bonuses in-game for doing all naval contracts (e.g. golden pistol).. I opened a ticket at Ubisoft's support a few days ago but got no response.. Since this is related to achievements and not in-game progess I do not know if it is Ubisoft's or Microsoft's concern... I even kept playing to get all the other singleplayer achievements (which I did) hoping it would pop later on but so far nothing.. Anyone had the same issue??