Kill 5 Vilebranch Berserkers and 5 Vilebranch Shadowcasters in Jintha'Alor.
We won't give them a chance to react. You must re-enter Jintha'Alor and charge all the way to the upper tiers.
The Vilebranch berserkers and shadowcasters are dangerous enemies, <name>. When the others see their bodies thrown across the walls, they'll know we mean business.
Don't leave any Vilebranch hearts beating!