The Hidden Blade Assassin's Creed in Depth

http://www.youtube.com/watch?v=OAVTAFUSHZ4
[From the forums -stabguy]

Here is my fastest blitz for Silvio and Dante:

Setup Dante: I run up to Dante and engage him in combat. Then I climb into La Arsenale, making sure Dante is still after me. I run far into La Arsenale so that the door and walls at the entrance will not be modeled in the game. This gives Dante a chance to get though. Go back, and if Dante is there grab him. Do not engage him in combat or he will fight you.

I place Dante at the edge of the docks and knock him off with a throwing knife. His drowning will start the scene, and if you are currently in water you won't get teleported to the checkpoint during the scene. The best time to climb up the docks is during the second scene. Where you move depends which way the camera is facing, so the best time to start moving is right after Silvio says "they're going to leave without us" . Move forward left until the screen turns white to grab onto the docks, then move forward to up climb the docks. Now comes the blitz. The two targets are far apart when they start running, but they get close enough for a double air assassination when they get in place. A few times I've gotten it a bit faster, but only gotten Sylvio since he's so close to the wall-running platform. Theoretically it might be possible to get a faster blitz, though.