"Perform various assassinations" is a mission objective in Sequence 2 / Memory 02: Mister Walpole, I Presume?
Walkthrough
After Julien du Casse gives you the Hidden Blades, the Templars want you to demonstrate your assassination skills
Follow the prompt on screen to perform various different assassinations on the dummy targets
Perform the following assassinations:
- Regular assassination, from near the target
- Hidden assassination, from inside a Haystack
- Blended assassination, blend in with the workers and perform an assassination
- Air assassination, climb to one of the roofs and assassinate your target from above
- Running assassination, sprint and assassinate your target