Clean House

Easy Achievement for Battle for Azeroth Level 120 and beyond...

1. Mythic Difficulty.

2. Clear trash in the boss room before fight, you don't need that stuff messing around while you're nuking the boss.

3. Nuke Boss. Maximum High Burst Damage at the start and Hero/Lust if you can.

4. ?

5. Profit. Achievement Completed.

Extremely easy achievement, just soak all the pools that he spawns. This is one of the most straightforward achievements for this meta. Just lust / CD after the first set of pools. That's it.

Video: https://www.youtube.com/watch?v=r8OLsTTii00

I just earned this achievement on Heroic difficulty today. Even achievement says "mythic difficulty" but I think it's because those dungeons were only mythic difficulty before a patch. Blizzard decided to release HC versions of CoS and Arcway on a patch so I guess they didn't bothered to fix the achievements for splitting achievement criteria on those two dungeons..