After the previous mission, you’ll get an objective marker on the western side of the world map at Tulum. Sail over here and reach the marker to begin the mission.
To start with, we just need to walk with the friendly NPC with the blue objective marker above his head. As you reach the large temple building, a scene will play. Afterwards you will have access to rope darts. These are handy as you can use them to pull people off balance for an easy assassination, or hit them with darts from up in a tree and then hold back on the stick to hang them for an easy kill. Handy!
Part 1: Fight
This next section is a series of fights as we move through the jungle towards the beach. Note that there is an optional objective to both hang two enemies with rope darts and to pull three of them off their feet. As such look out for opportunities to knock these off as soon as possible.
Head through the first few green objective markers until you reach one that is located above some hostiles in a tree. Use a rope dart to hang your first soldier here. Kill the rest at ground level. Continue around the next corner and use a rope dart to pull one of these soldiers, kill him when you are done.
Follow your friend up the branch and into the nearby tree, after a jump or two there will be a mess of enemies below. At this point use a rope dart to hang your second enemy. Now that you are at ground level, defend yourself against the 6-7 enemy soldiers and if you get the chance try to use rope darts to finish off the rope dart pull objective. Once all of the soldiers are dead or dying continue along the path until you reach the beach.
Part 2: Fight
As we reach the beach, there is a full on Spanish invasion going down. To complete the mission, we need to kill 20 of the enemies on the beach and in the ships out in the bay and the Captain who is also on the ship out in the bay. Stay on the beach and be sure to use your rope darts to fulfil those optional objectives if you haven’t done them yet.
Once you have killed around 15 enemies, make your way over to the ship with the captain on board (he’ll have a conveniently placed red objective marker for us). Stealth swim around to the back of the ship and climb on board.
Run over and hit the group of Gunners and the Captain with a smoke bomb and finish them all off whilst they are stunned. Finish off any remaining enemies until you have reached the quota. As soon as you have killed 20 enemies and the Captain the mission will be complete.
Complete memory sequence 11.