I, as all else, did things in a slow and painful way on my first playthrough - which is still ongoing.
Rescued Sazza, and walked past the outer outpost. Then started picking off goblins from the front gate onwards by assassination and small ambushes. One slice at a time.
Slow, methodical and a truckload of save scumming.
Cleared the temple, got to the Underdark, found Halsin, killed the bosses.
Only have the main gallery of the goblin camp with baddies, whom I can just bypass.
Not the ideal way, but it saved me when they beat on wardrums and no one responds.
