Assassin's Creed 4: Black Flag Walkthrough Part 18 – Sequence 3: “A Single Madman” Part 2
Optional Objectives:
Stay out of Combat
Air Assassinate du Casse
After hitting the marker, press on to the right. Jump toward the far side of the collapsed bridge. From there just run on down the path. There is a free running course you can follow to get through the section without much trouble at all. Slow down when you start to see huts and guards appear on your minimap. If you get sighted, just quickly duck into the Stalking Zone on the left of the path. The Soldier will come and investigate and you just need to assassinate him when he does.
Once that Soldier has been (optionally) dealt with, head on through the Stalking Zone. There is a stationary guard who will pose little trouble at the end of it plus the few Soldiers watching. Just wait for the roving one to look away then, from the end of the Stalking Zone, run on up the tree and swing to land in a Stalking Zone.
Alternatively, you can enter the Stalking Zone and head toward the few Soldiers there. Go to the far point of the soldiers and whistle. This can draw 2 of them in, quickly assassinate both of them. From there, just deal with the remaining guards in the same patient manner. Take out the Soldier that is by the fallen tree, if you desire, then enter the Stalking Zone beyond him.
Now it is a little too hard to kill off the various Soldiers and Gunmen. Once in the next part of the village, turn to the North. You will see a Soldier and a Gunman patrolling the same tree. Wait for them to face away then dash over to the next Stalking Zone to the North. Follow that around the hut. There is a second Stalking Zone just ahead by a pool of water with 2 Soldiers none too far away. Wait for the patrolling Soldiers to be looking away then make the dash over to the next section of Stalking Zone to the North. Follow that Stalking Zone quickly as 1 of the 2 Stationary Soldiers is likely investigating some. Just keep moving forward. Then you are behind the next hut, find the pathway leading away from it and sprint for it.
Once on this path leads out to the seaside village, turn to the East and start up along Stalking Zones. Head toward the mansion that sits above it all. When you make it to the top, look to the left. There is a tree jutting out of the cliffside. Head out on it and dive into the palm leaves below. Dart over to the nearby Stalking Zone closer to the beach. There is a Soldier patrolling the area you can lure over using some Whistling. Now you need to start on toward the ship sitting in the bay.