It's a Trogg Eat Trogg World

Easy Solo for Level 80-100 Worldsoul Saga & beyond...

1. Mythic Difficulty.

2. Enable achievement tracking for criteria completion as text will turn from red to white.

3. Begin fight, do not attack boss.

4. Trogg adds will spawn, eventually you will have 10 up at the same time. Tracker will let you know once you have enough as criteria changes from red to white.

5. Now, the trick is killing the boss without accidentally killing the Troggs while doing it, use abilities that single target and do not aoe under any circumstances.

6. With the boss dead and 10+ troggs alive, criteria has been met.

7. ?

8. Profit. Achievement Completed.

Easy enough achievement, make sure to have 10 of the bosses adds alive when he dies. As the tank I just kited the adds away from the boss, DPS killed the totems, and once about 4-5 add waves spawned we killed the boss!

Criteria:
Defeat Bromach while 10 or more Stonevault Troggs are still alive in Uldaman: Legacy of Tyr on Mythic difficulty.

Strategy:
This achievement is a waiting game. Throughout the fight, the boss will summon waves of adds; after 4 waves, you should have 10 and can defeat the boss.

Some tips: DPS should not use AoE abilities, as you do not want to cleave down adds accidentally. DPS can and should also destroy the totems as they spawn.