What the achievement asks
Defeat Yazma in Atal'Dazar on Heroic difficulty or higher. Ten points, both factions.
Atal'Dazar is the pyramid of tombs above Zuldazar, where the Zandalari kings were buried and where Zul's lieutenant has set up shop.
The four encounters
| Order | Encounter |
|---|---|
| 1 | Priestess Alun'za |
| 2 | Vol'kaal |
| 3 | Rezan |
| 4 | Yazma |
Rezan is the loa of kings, and killing him is a significant moment in the Zandalar storyline rather than just another boss. Yazma follows and ends the run.
Heroic or higher, but on one character
Blizzard's wording is "on Heroic difficulty or higher", so a Mythic or Mythic Plus run earns it just as well. There is no need to queue for Heroic specifically.
The eight Heroic dungeon achievements are not account-wide. Four on your main and four on an alt leaves you with nothing. They all have to be earned by the same character.
Once one character holds all eight, the Battle for Azeroth Dungeon Hero achievement they feed into is account-wide, so the grind only has to happen once.