The Telvanni force me to work, but I make sure it brings them no pleasure.
Note: The purchase of the Morrowind Chapter is required to complete this achievement.
This quest begins in Sadrith Mora on the largest island off the east coast of Vvardenfell. The questline will take a few hours to complete.
Tip: There are a lot of thieving and legerdemain activities required for this quest line. Improved Hiding, high pickpocketing, and sneaking gear sets would be very helpful to complete the quests given.
There is an intriguing post on the official forums by Paulington that reveals some very interesting clues of what the next crown crate mounts look like, new costumes, new pets, personalities, and more.
The next crown crates appear to be “Spriggan-themed”.