Requirements: Unknown

Gaining access to Dreadspire is much easier than many people must have originally expected. There are 4 parts to the quest which can be completed in any order. The main NPC who starts it all is Treddlehoop. He can be found in Corathus Creep.

Treddlehoop wants you to collect four items for him:

Treddlehoops' Signature Monocle (Scavenger Hunting)
Spectacular Image Enhancing Prism (The Lost Notebook)
Gold and Platinum Twined Necklace (The Lost Gnomes)
Golden Shiliskin Tentacle Ring (Deserting the ks)

Once you have all four items, hand them in and receive Treddlehoops Wonderful Monoculor Seeing Device. This is the key to Dreadspire. The zone-in to Dreadspire is in the hive, in the top nest. Click on the door marked by a 1 in this map.