Among the many side missions you can complete in Assassin's Creed Black Flag Resynced, one category is known as the A World Without Gold missions. This is a special side mission questline that becomes available once you reach Sequence 12 of the story. Among other things, these missions will allow you to recruit the final officer and earn several special rewards and related achievements/trophies.
To begin this mission, head to the harbor in Great Inagua (818,446).
After the cutscene, head to the Jackdaw with Anne and speak to her to complete the mission.
This mission will begin automatically after completing the previous one. You'll be sent to the harbor in Kingston (616,152) to look for Maynard.
As you approach, the search area will move to the southwestern viewpoint in Kingston. Head south and use Eagle Vision and the Look function to locate two green markers, one inside the warehouse and another to its left.
The third clue is carried by an officer you should find inside the warehouse where the second clue is located on the wall. Return to the Jackdaw once you've collected all the clues.
This mission will begin automatically after completing the previous one. You're looking for the HMS Demolition in the area southeast of Eleuthera (728,705).
It's a warship sailing in circles around the area, so it's pretty hard to miss. You must board it rather than sink it to capture the ship.
This mission will begin automatically after completing the previous one, provided you've recruited Lucy Baldwin and the Padre. You'll need to return to Great Inagua and approach the marker. Interact with it to watch a cutscene.
Afterwards, find the Padre and Lucy inside the search area and help them out. Once you've done so, you'll be sent to speak to Deadman, the man you pulled out of the crate during the previous mission. Finally, return to the manor's main hall to watch another cutscene.
This is one of two missions that become available after completing It's a Start. You'll need to travel to Santanillas, southeast of Chinchorro (189,222).
Once there, find the Padre on the shore and speak to him. You'll be sent east to deal with a ship that you must sink after meeting up with your officer's former crew.
This is one of two missions that become available after completing It's a Start. You'll need to meet Lucy in Nassau (595,762).
This is a short target-elimination mission.
This mission will become available after completing both Not Our Natural Allies and I Just Want to Talk. You'll be sent to Maynard's estate in Tortuga (847,338).
After docking, wait for Lucy and storm the manor. Examine the portrait in the upstairs bedroom and the jaguar downstairs. You'll then be able to examine a note on a barrel opposite the bed in the bedroom where you found the portrait. All that's left is to return to the Jackdaw and sink the enemies coming after you.
The final mission will send you to Port Royal. As you approach the harbor aboard the Jackdaw, three sub-missions will become available, requiring you to follow your officers and sabotage Port Royal. These are straightforward Assaults that don't require any further explanation. Afterwards, you'll be able to sneak aboard Maynard's ship by interacting with the hatch on the deck. Once you've blown up the barrels, search the table on the opposite side of the ladder to find a note.
All that's left is to follow the markers and eliminate enemies until you return to the Jackdaw and face the British fleet. The HMS Ipswich is extremely vulnerable to Fire Barrels. Turn your stern towards it and drop barrels in its path or directly against the ship, then use the Jackdaw's Ram-Dash to board it and finally settle things with that bastard Maynard once and for all.
