How? Isn't it Obelisk?

Moderate Solo for Level 70 Dragonflight, Easy Solo for Level 80 Worldsoul Saga and beyond...

1. Normal Difficulty.

2. Notice the two obelisks one in the far left corner and one in the far right.

3. Pull boss and tank at the obelisk.

4. Vita spawns, let it get closer to boss, and then kill it before it touches boss.

5. Soak up and look at the obelisk, you can then run to the obelisk and it should be destroyed.

6. Rinse & repeat for the second obelisk.

7. Nuke boss down.

8. ?

9. Profit. Achievement Completed.

You can see the Obelisks in the far left and right sides of the room. Tank the boss near one of them.

When Vita and Void spawn, first kill Vita. Have a few people designated to soak the bouncing ball. It will bounce/travel in the direction the player is facing. Just make sure it lands on the Obelisk in any of the hits and you will destroy it.

After that one is done, move to the other one and do the same thing.

Clarification for step 5: there will be a black circle showing where an orb is going to land if you did the step 4 correctly. Soak this circle with your character facing the obelisk. Keep doing this until the black circle appears under the obelisk. When the black circle's orb lands, it should break the obelisk.