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Assassin's Creed 4: Black Flag Walkthrough Part 57 – Sequence 9 “Trust Is Earned”
By Douglas Shepard (Editor in Chief, RarityGuide.com)
Published on 11/27/2013
A series of articles covering Assassin's Creed IV: Black Flag. This covers the memory, "Trust Is Earned" with Edward Kenway chasing after Roberts to learn of the Observatory.

Assassin's Creed 4: Black Flag Walkthrough Part 57 – Sequence 9 “Trust Is Earned”

Optional Objectives:
Free 2 groups of pirates
Double assassinate Cockram and Burgess

Sea out to the marker. The marker is found in the Southeastern portion of the map. After you get to Africa then continue to the South into the coastal islands. After the opening cinematic you will find yourself going up against 5 ships: 4 Gunboats and a Robust Frigate. The gunboats should be little challenge, but the frigate maybe more so depending on your level of upgrades to the Jackdaw. Either way, you can board the frigate for its cargo and to repair the Jackdaw. If neither are needed then simply sink it. Time to head for land to continue the memory.

Be sure to check your darts stock if you are interested in the Optional Objectives. They are a great boon for this memory. Roberts will be asking a favor in this regard. The darts just make freeing groups of pirates that much easier.

Land in the marked Western beach.  None too far in you will find a View Point you can Synchronize with. It is the remaining mast of the shipwreck in the shallows. Head to the Southeast and go on through the natural arch that is formed here. Through the archway you will see 2 Stationary Brutes. There are 2 Patrolling Soldiers in the area as well. Moving between the Brutes can get you a well timed double assassination or just shooting the gunpowder barrels to get them all. The same can be done with the patrol as well. Wait for the patrol to move away from the arch and use that time to duck into any of the nearby Stalking Zones. Wait for them to pass you then get them with the attack. With those out of the way then you are clear to start your next approach. Head up the slanted tree to your right. Follow it along to the right to collect the floating Animus Fragment. Land on the ground to trigger a cutscene with Roberts.

Roberts can see that Kenway is at least good to his word with getting him out of here and sends him after Burgess and Cockram. He also asks him to send any of his crew that is found to him as well. It is always good to do both. Take a moment to loot the nearby chest (and any bodies for ammo if needed) before moving on.

Head to the North to get started. Go up the slope until you see the first of a pair of Brutes. One will be stationary while the other patrols. Lure the patrolling one in with a Whistle to a Stalking Zone for a silent kill. It just helps to thin the patrol some here opposed to letting him remain. Now press on to the East and toward the fence. Keep to the Stalking Zones. There are 3 Soldiers in the next area: 2 Patrolling and 1 Stationary. A fight will not draw attention from anywhere else so you can engage them openly. It is also very simple to kill them with stealth. When they are dead then head into the small cave to the Southeast. You can find another chest inside. Head on out after that and climb up the tree near where that first Soldier was. Climb up the tree there to get into the compound. It is time to get to work on setting some of those pirates free.