Some targets in AC1 will detect you if you are close enough and in their line of sight, even if you're blending. The point of this video is to push the boundaries of stealth by getting past that with the help of save the citizens.
Abul Nuquod
I move the nearest saved citizen into Abul's palace (you'll have to throw her in when you reach it or she'll be on the other side of the door when it closes). Then when I feel the moment is right I lock on, allowing me to remain anonymous. During the short moment that I'm anonymous I climb onto the balcony, which would be impossible to do anonymously with Abul's bodyguards around.
William
I wanted to get in the huddle of William's men killing the civilian soldiers. Luckily there's a save citizen in the fortress. But you have to quickly start throwing him to reach the place before the civilian soldiers are killed. Also I previously killed the guards in the fortress to avoid being detected beforehand. If you're wondering why I walked away instead of trying to kill William anonymously using this method, it's because William wasn't right there doing the killing, plus Jackreacher already made a similar video on that.
http://www.youtube.com/watch?v=UVi9HFYZSaM
Majd Addin
The goal is to be right there when Majd is killing one of his victims. But first I remove all the guards in the area using the broken timeline exploit.
http://www.youtube.com/watch?v=n4lhVnnKK0c
When I respawn I run to the nearest save citizen (there are two save ctizens that are the closest, but I went for the monk since his dialogue scene lasts longer). I have to move quickly because Majd starts his talking and killing right away. I had hoped to be right in between Majd and the victim during the killing, but that might not be possible.
Sibrand
I start off by eliminating all the guards in and around the ship. The nearest save citizen is just outside the dock area. I wait for Sibrand's speech at the front part of the ship to strike.