User blog comment:JusTSeaN/Guides/@comment-1685631-20100716160905

Diablos' weakest point is the tail, and I found a lance most effective, specifically the Gobul Lance. When Diablos is paralyzed its tail its closer to the ground allowing for an easier cut. Once cut the weakest point is the tail stub. Just saying. Barioth is on 3 star online. You need to be HR 18 or higher to initiate/join the quest. For Barioth I bring Wyvern Blade Fire and slash his wings till they break, then go for the head. You have to distance yourself from him so you have enough room to dodge if he starts leaping at you. Hit him when he stops charging, when he does the ice tornado, and when he taunts.