With the release of Patch 11.2.7, players now have a new meta achievement to chase: 
Worldsoul-Searching. Completing this rewards the flashy 
Geargrinder Mk. 11 mount, and the 
Drained Dark Heart of Galakrond decor item—perfect for showing off in your new home.
Here we’ll break down exactly how to earn the achievement:
Worldsoul-Searching
To complete Worldsoul-Searching, you’ll need to complete the following achievements:
Nerbu-ar Palace
Nerub-ar Palace – Defeat all bosses of the Nerub-ar Palace raid on any difficulty
Liberation of Undermine
Liberation of Undermine – Defeat all bosses of the Liberation of Undermine raid on any difficulty
Manaforge Omega
Manaforge Omega – Defeat all bosses of the Manaforge Omega raid on any difficulty
All That Khaz
All That Khaz – Complete the following achievements:
-
Khaz Algar Flight Master - Loremaster of Khaz Algar
-
Khaz Algar Diplomat -
Khaz Algar Glyph Hunter -
Khaz Algar Lore Hunter -
Allied Races: Earthen
This achievement also unlocks the Freywold Spring campsite
You Xal Not Pass
You Xal Not Pass – Complete the following achievements:
- Slate of the Union
-
Crystal Chronicled -
Isle Remember You -
Rage Aside the Machine - Azj the World Turns
This achievement also rewards the 
Shadow of Doubt mount
The War Within Pathfinder
The War Within Pathfinder – Complete the following achievements:
- The Isle of Dorn
- Hallowfall
- Khaz Algar Explorer
- The Ringing Deeps
- Azj-Kahet
This achievement also unlocks Steady Flight in Khaz Algar
Glory of the Delver
Glory of the Delver – Complete the following achievements:
-
Delve Loremaster: War Within -
Sporesweeper -
Daystormer -
Leave No Treasure Unfound -
Spider Senses -
Brann Development
And at least one of the following:
-
My First Nemesis -
My New Nemesis -
My Stab-Happy Nemesis
This achievement also rewards the 
Ivory Goliathus mount
Going Goblin Mode
Going Goblin Mode – Complete the following achievements:
-
Adventurer of Undermine -
Treasures of Undermine -
Nine-Tenths of the Law -
Read Between the Lines -
That Can-Do Attitude -
You’re My Friend Now
This achievement also unlocks the Gallagio Grand Gallery campsite
Owner of a Radiant Heart
Owner of a Radiant Heart – Reach Renown Rank 10 with Flame’s Radiance
Unraveled and Persevering
Unraveled and Persevering – Complete the following achievements:
-
Remnants of a Shattered World - Explore K’aresh
-
Dangerous Prowlers of K’aresh -
Secrets of the K’areshi -
Treasures of K’aresh -
Bounty Seeker -
Power of the Reshii
Source: WoWDB Housing Hub
