Enter High Keep at -314, 167, -584 on Karak Peak in Vesspyr Isles.
NOTE: There is a 365% CC Debuff (Goblin Trickery) so you will need VERY good pre-ToV armor or at least the quested ToV armor/jewelry. Also, even the trash mobs have millions of HP's (at least on Beta on 11/01/13)
As you fight him, drag him over sparkling boxes. Some of the boxes, when they break will have "an escaped swine" while others will have a bear trap. Once Hammy gets caught in a bear trap, you can burn him down.
Proceed down the hallway to the east to The Grand Dining Room
Don't kill Hoblok at -127, -110, -32 . If you do, all of the goblins in the room will attack you.
Go to back room to the west where you will find General Graknus
Kill General Graknus:
Adds will spawn during the fight
Watch what he says and act accordingly
Fighters: When the red text "You have been targeted by Graknus!" look in your chat window and you will see the message "My soldiers find your allies more lucrative. But can you pull them off in time? You have 20 seconds..." - Taunt soldiers away from your healer/allies or you will wipe.
Priests: When the red text "Graknus knows you control the power of life!" look in your chat window and you will see the message "Can you prevent the death of you and your allies? You have but seconds!" - Prepare for a massive spell that hits your partner in Advanced Solo a death prevention spell might be best.
Mages: When the red text "Graknus senses magic flowing from within you!" look in your chat window and you will see the message " " - .
Scouts: When the red text "Graknus's eyes are too keen for you to remain hidden!" look in your chat window and you will see the message ''Can you deal death to my horde in time? You have but 20 seconds, or I have your life!" Kill all of the adds that spawn in.