Unlike the base classes which perform Specialization, Avengers undergo a different kind of class advancement called Awakening, in which the Spin-off Class' true abilities are fully unlocked. At Level 50, Avengers can begin the Awakening Quest.
[Expand] Secondary Specialization Quest Dark Avenger
Dark Avengers have the special ability to go into the Dark Avenger Mode at will and embrace the element of hellfire into their rogue fighting style. Imbued with wing-like demonic compulsion, this class harbors intense AOE damage and is diabolically stylish too.