- Sabotage three alarm bells
- Visit two old friends
When the scene starts you can choose to rattle the cage to help in your escape or simply wait for events to unfold naturally. Once you have control, head left up the crates and into the trees to a Leap of Faith into a hay cart and then assassinate the guard that walks by. Wait for the Captain and nearby guards to turn away and then sabotage the bell and head into the stalking zone nearby. A guard may come to investigate, so kill him if he does and then cross to the other side, killing the other two guards quietly when possible.
If the guards spot the body of their buddies they will run for the alarm, so if you are going for stealth you don't want to kill anyone in the open or you want to use the corpses to lure more guards in the area to make sure that you clear it out before moving on.
There is actually no reason to stay quiet, but it does make the mission easier. If you don't care you can just go in and kill all the men and focus on any enemy that is running for a bell to kill them so they don't trigger it.
Follow the wall southwest to a fence and then wait for the nearby patrol to walk by and assassinate him. Look to make sure all guards are facing away and then rush to the well and hop inside and carefully shimmy around to kill the guard standing by it. Wait for a clear path to the crates across the way and take position on a corner so you can whistle and corner assassinate the final patrol in this area. The final static guard should be no problem for you, so take him out and then sabotage the bell.
Follow the stalking zone to two guards and wait for the patrolling guards to look away and move to the bushes behind the single guard to the north. Wait for his buddy who stops right in front of him to start walking away and then stealth kill the single guard from the bushes. Wait for his buddy to return and whistle him over for another stealth kill and then return to the area behind the pair of guards. Wait for the patrolling guard to walk away so you can double assassinate the guards and then rush over and finish off the last one.
If you head south a bit you can find the body of Rackham in a cage and interact with him for the optional objective and then climb the wall and jump to Rackham's position and then over to the Animus Fragment. Head along the wall with the scaffolding toward the bell and look above the north gate where a Gunner patrols and either wait for him to look away or Sleep Dart him and then sabotage the bell.
The guard near the cart will come to investigate, so get back in the stalking zone and kill him and then head up the scaffolding and then hop down to some crates. With the Gunner still asleep, wait for the guard to walk north and then run along the south wall to some bushes. Watch for the guard who walks in the ditch below and make sure he can't see you and continue along the south wall to the next corner.
Wait for the guard that patrols the sunken ditch to return and when he turns his back run down and kill him and then return to the bushes on the inner side of the corner. Look to the east wall and wait for the patrolling guard to turn and walk away and then double assassinate the guards by the cannon and return to the bushes you came from. Wait for the patrol to return and investigate his friends death and then jump the gap to get behind him and finish him off as well. Using the inner wall, head for the the roof of the house to the north and then turn and hop into the hay on the corner of the area below.
In the courtyard there is a lot of guards you can ignore, so wait for the guards to walk away and then whistle over the guard blocking your exit and kill him from the hay. When clear and all guards are not looking, head inside the prison (you must be anonymous).
Follow the corridor until it bends right and use the wall to whistle the guard over and corner assassinate him. Since there is no penalty for open conflict, enter the main room and kill the guards and then check the cell in the corner to complete the optional objective. The rest of the memory is a straight shot to the girls with only a few guards in your way.