Ubisoft has released a new book on the development of Assassin's Creed: Revelations in which we are told in detail the operation of the Assassins Covi and how to defend them. Once you have established a den, the Templars could arrive en masse with the intention of destroying your refuge: the player must defeat them killers and others with all the weapons at your disposal and you can also create barriers that can slow them down. Find the video below.

Assassin's Creed: Revelations - The defense of Covi | HD version