The Hidden Blade Assassin's Creed in Depth

Here's a description of each assassination.

Zero tolerance has a literal meaning in this video as I try various assassinations in the contract.

Port Authority - 39 Meters
The goal in this video is to shoot the target from as far away as possible. You desynchronize at a distance of 40 meters, so 39 meters seems to be the best one can do.

Stunt Assassination
A stunt assassination on this target is a little tricky. The mission ends immediately in failure if the target detects you, and plummeting from the sky and landing right next to him is just the type of activity that might get you Exposed. You need to attack the instant you hit the ground in order to complete the mission successfully.

Mysterious Death
Start off by using the passing crowds to hyperblend on the horse. If you are not familiar with superblending and hyperblending, please see these articles first:
http://www.thehiddenblade.com/superblend-exploit
http://www.thehiddenblade.com/hyperblend-exploit

The goal is to poison the Pazzi conspirators of Sequence 5 and escape, without being seen at any time (no yellow bars).

After you leave the area, the gate to the compound is no longer modeled in the game. The developers forgot to put it back in place when you return. This mission is loosely related to "There is no spoon"-type missions:
http://www.thehiddenblade.com/dante-moro-and-silvio-barbarigo-assassinat...

Still Life - Dynamic Stunt
The target circles around the yard untill he sees something suspicious, at which time he flees to a waypoint on the south side of Palazzo Pitti. This gives a brief opportunity to perform my favorite type of stunt - where both you and the target are running full speed toward the stunt location.

Differential Notoriety

The five targets in the Meeting Adjourned mission are dispersed in a small room with many guards, which makes this mission seem like an unlikely candidate for anonymous poisoning. Fortunately, the developers made an unusual choice in the design of this mission: The room is not a high alert area. Instead, they elevated the awareness levels of the targets so that they behave as if you were Notorious, which is functionally similar to making the room a high alert area - except that the developers did not change the guards in the room correspondingly. As a result, the targets and guards behave differently in this mission, which is what I exploit in this mission design to poison all of the targets while remaining unseen (no yellow bars) to all of the guards.

10 Brutes in 60 seconds. The usual advice for this contract mission is to use smoke bombs and/or poison. Smoke bombs disable your opponents for easy killing, and the poison delays the start of the timer. (The countdown starts when the first Brute dies.) This video uses other strategies that let you kill everyone using only hidden blades.