First, take out the archers to the north from a distance. A recommended strategy is to make use of your missile weapons and staves. In this instance, you're fighting not just a Revenant but also several of his buddies. The idea is to keep his actual participation in the battle to an absolute bare minimum if you can manage it. These include Critical Strike, Deadly Strike, Death Hex, Flaming Weapons, and Telekinetic Weapons. Another type is abilities that will increase the parties capacity to inflict damage on the Revenant. These include Misdirection Hex, which can cause the Revenant to miss its blows, and Curse of Mortality, which will negate its regeneration ability. Another type is spells that while not immobilizing the Revenant, will reduce its ability to fight. Spirit Prison, Cone of Cold, and Petrify qualify. One type of talent is spells that can hold the Revenant still. To defeat a Revenant, it helps to have a healthy mix of 2 or 3 types of talents. It can also use Telekinesis to pull opponents within melee range. It can swing its weapon in an arc, causing lots of damage to multiple nearby enemies. A Revenant is an incredibly powerful opponent in its own right. There will also be a few Skeleton archers north towards the entry to the castle itself.

Waiting for you at the west side of the courtyard will be a Revenant and a horde of skeletons.Here is the stairs back down to the Redcliffe Castle - Basement at #7.

Dragon age origins redcliffe