With the help from Hanna , they defeat the slivers .
With the help from Hanna , they continue through the back door entrance to the stronghold via the ventilation ducts that eventually lead to the Furnace of Rath .
With the help from Hanna , they defeat the slivers and continue through the back door entrance to the stronghold via the ventilation ducts that eventually lead to the Furnace of Rath .