Warrior Berserk

[Penish]

A warrior will go berserk when falling below 30% health and will remain berserk permanently until his or her health reaches 45%. (Need confirmation of numbers.)
While berserk, the warrior gains a small amount of attack rating (how much?) and will score a crippling blow whenever he or she would normally have scored a critical hit.

Going berserk is accompanied by the message, "Soandso goes into a berserker frenzy!" which will appear in the chat boxes of both the warrior and another other nearby players. "Soandso is no longer berserk" signals the end of the effect.

Berserking is a hard-coded mechanic of the class and stacks with all buffs, disciplines, etc.

Cant find anymore information than this... if anyone could help ) Looking for actual mechanics.