Azeroth at War: The Barrens

Azeroth at War: The Barrens are based on missions from your mission table at BfA major city on your faction's boat. It can be either an Rare or Common mission to count toward this achievement.

To know what to look out for when you only need a few more..

Azerite
Barrens at War
Azerite Weaponry
Investigate Wailing Caverns

Gold
At a Crossroads
Lingering in Theramore
The Defense of Northwatch Hold
Steamwheedle Alliance

Reputation
Our Fort Was a Triumph (7th Legion)
Razor Hill Supplies (7th Legion)
Salvaging Tiragarde (Proudmoore Admiralty)
Echo Isles Navy (7th Legion)

Special
Great Gate of Mulgore (Battle-Scarred Augment Rune)
Barren Supplies ([item=163036])

As of patch 9.2.5 this achievement is obtainable once again!
Defending Durotar appeared at the mission table offering rep and follower experience.

The agony is over!