Meet Haytham and interrogate a criminal. He’ll give you the information you need, and then you’re off again.
Follow Haytham and Locate Another Assassin
Haytham takes you through a fun dash north, through the streets. There’s plenty of chaos at the moment, so you’re likely to be interrupted by some small skirmishes. These are fast and simple, especially with an ally at your side. Cut through the criminals and get Haytham to a manor house in King’s Farm. The house is owned by a wealthy and well-connected Assassin.
The criminals have barricaded the entrance to the compound, but they’re fairly close together. Use any type of grenade to disrupt them and get in there for the kills. If you’re trying to work on the challenges that involve grenades against large groups, this is an opportunity for you.
Push in through the damaged barricade with the British soldiers, but ditch them when you reach the manor. Climb the walls and follow the waypoint toward a sunroof by the back side of the compound. A cutscene occurs, and you end up inside the warehouse below.
Escape from the Warehouse
Optional: Do not get damaged by the poisonous clouds
Climb up the wall to your left and shimmy to the right around the pipes. Go as far as you can along that route, onto an open wooden support. Climb up, and jump from there onto the wall nearby. It’s a short jump, but make sure that you hit the wall cleanly so that Shay can grab on instead of falling into the cloud below.
Shimmy to the right until your back is to the far wall (the one that leads toward the waypoint). Leap off the wall and grab on to the door frame on the other side. Climb up and use a broken section of bricks to get into the other half of the room.
Leap far into the room and use a lift there to reach the top of the warehouse. You won’t take any damage, and the optional objective completes as soon as you reach the top.
Locate the Assassin
Optional: Stay out of combat
This is one of the few areas where you have to follow a specific pattern of actions if you want to get your optional objective, this walkthrough takes you through it carefully.
Immediately sprint into the yard ahead, and take a sharp right onto a path between bushes and the right wall. Run up to the guard at the end of the path and assassinate him. It won’t count as combat, so you are still clear on your objectives unless he turns and spots you in time. If you’re fast, he won’t.
Use the boxes by the wall to get up and onto the railing, and from there you can jump between the trees and the rooftops to stay above the lower yard. That’s pretty much required for getting through this bit because there are about a dozen criminals and Assassins in that lower yard. You can’t avoid combat for love or money.
So, stay up high. There are still guards, but all of them are looking away, toward the ground. They’re not going to be ready for a blade to be plunged through their hearts, and you still won’t lose your noncombat status. Sprint between targets, and get to the end of the yard. That’s when you locate the Assassin and get credit for the optional objective. You won’t have to worry about fighting now.
Kill Your Target
Sprint after your quarry and dip to the left to avoid her ambush of gassed criminals. Jump over the plants and through the opening to stay at full speed and avoid damage. The Assassin takes to the rooftops, and it’s a brutal slog to follow her. The mix of your poison and her bombs ensures that you won’t get a good chance to catch up.
So don’t.
Pace her from the ground and stay close. She’ll eventually go to ground, giving you a chance to shoot her. It’s fine if this fails because you can keep up the chase. Stay to the sides of the area, or even run through the alleys to avoid the pools of gas and affected criminals that you’d otherwise have to run through.
Winded, the Assassin eventually has to stop to catch her breath. She’ll hide behind a small wooden building while her allies swarm anyone who comes close. Ignore them and whirl around the side of the building to catch your target unaware. The kill is easy once you’re close, though she can still fight plenty well if you don’t get the drop on her.
Killing the Assassin ends the memory. Fast Travel back to Percé, in the North Atlantic.