Note that to complete the steps in this guide, you will need to own the Necrom Chapter.
Shroomtender is a popular new outfit style added to ESO with the Necrom chapter. It can be obtained by completing a series of Exploration and Quest achievements in the new Telvanni Peninsula and Apocrypha zones.
Unlocking all of these will be a bit of a lengthy project, at the very least it's going to take you a few hours to finish everything. However this guide will make it as quick and easy as possible, guiding you through each required achievement step by step.
Please navigate through the Guide Chapters to find out what you need to do to unlock each of the seven pieces of the Shroomtender Outfit style.