When finished all of the quests in Nesingwary Base Camp, you canaccept the quest from Nesingwary 1, guide you to Dorain's Outpost, here, you will accept even harder quests.
Deliver2, accept 3.4, do them together .
Deliver 3.4, accept 5 .
Deliver5, accept 6.7.8 .
Deliver 6.7.8, go look for Avatar of Freya .