"Kill 3 guards while hanging from ledges" is an optional mission objective in Sequence 7 / Memory 01: We Demand A Parlay

Walkthrough[edit]

After you begin your infiltration of the fort you are given this objective. There are 3 Guards in great positions for you to get ledge assassinations at.

The first guard is at the top of the first climb. Just go to the ledge and wait for him to come to you:

Kill 3 guards while hanging from ledges

Go into the watch post and use the beam to reach the next section of the climb. Go on up to the top of the fort and stay on the ledge. There are 2 guards here you can easily get with a ledge assassination each:

Kill 3 guards while hanging from ledges