All kind of bug in the quest? Spoiler! (Days Gone)

Spoiler alert!
So, ladies and gentlemen, 3-4 days ago caught a bug with impassable quest, as already mentioned on the forum. But as it turned out, without this quest I can't unlock the last achievement in the game and get platinum. The quest given by the captain of Kouri (or whatever his name is). In General, the colored man, which my ring. Nothing to do with the Negro in the camp I could not perform, nor under new management. I just come to the place, which has long been saved that man and made camp, but nothing happens. The photos below show exactly which quest you mean.





Anyone passed this quest?