The only spec that requires a special class to unlock I believe is Blood Mage ... only a mage player character can unlock it ... I don't ever remember seeing a book for it.  Blood Reaver is another one that i've never seen a book for ... but any class type can unlock that one. 
Bezerker is cool if you like seeing your stamina bar go down Base =P It is very stamina heavy but oh so pretty when you mulch everything around you.
Dual Striking + Momentum + Bezerk = human blender
"There are no problems that cannot be solved with cannons."
-Chief Engineer Boris Kraus of Nuln
	
	
	
Bezerker is cool if you like seeing your stamina bar go down Base =P It is very stamina heavy but oh so pretty when you mulch everything around you.
Dual Striking + Momentum + Bezerk = human blender
"There are no problems that cannot be solved with cannons."
-Chief Engineer Boris Kraus of Nuln

 
 

 
