Assassin's Creed IV: Assassination Contract
A side mission type in Assassin's Creed IV Black Flag.
 Assassination Contract Rules
Each contract has its own targets, and its own rule sets.
The target may be on land or may be on a ship, or may even transition from one to the other.
In some contracts there will be more than one target that must be killed before the player can progress.
All the Assassination Contacts can be found here: Assassination Contracts