Ruthless Jack Jack... on Nov 18, 2014 wrote:

Ever since you've met Captain Avery, he's cheated you. Who's to say that he's doing the same with Marco Pollo's map? What if Avery truly intends to turn the completed map over to the Armada? This would explain why he has been so helpful and supportive of us regarding the finding of the map pieces.

This is a very interesting hypothesis, except for one important fact: Avery was the one who warned us of the danger posed by the Armada and if he just wanted the pieces of the map, all he had to do was ask us to give him the pieces we collected.
Of course, I don't discount the possibility of Avery trying to grab the pieces for himself after we've finished the hard work!

I meant aren't known to play fair

But seeing as Valencia is our next location and we will be telling Avery how to defeat Kane, I think he's just a Pirate and not working with The Armada or if he was, maybe he's using us to take The Armada out of his way?