how do u get into the forge in sorrows?

thats all i want to know how do u get into the forge part in sorrows furnace?

Complete the 4 quests in "To Sorrows Furnace Quest"

Talk to dwarf outside Warcamp, who will tell you to go to Ennis.

Ennis is outside entrance on right as you leave warcamp, and will give you final assault quest.

Bulger will follow you in as well. After killing guardians use powder keg from Bulger to destroy gate, and proceed to next area.