The Power is MINE!

To summon the Primal Avatar for this achievement you need to pull the boss into the various quadrants in a specific order. There's no time limit to get him to these quadrants, he just has to enter them at some point during the fight in this order. The order you must do is Earth > Fire > Air > Frost.

If you do it correctly, a non-interactable item will spawn in that quadrant called Essence of Primal <Element> (either earth, fire, storm, or frost) to signal that you've done it right. Here is a screenshot showing the Essence of Primal Storms in the air quadrant, and you can also see the Earth one across the room.

While you can technically move the boss through the middle to go from Earth to Fire and Air to Frost, we found he would often stop to cast things on the way and do his massive ticking damage which we couldn't heal through. What ended up working for us was to pull him to Earth on pull and leave him there until his first intermission. This gave us about 30 stacks. After first intermission, we pulled him to Fire, and waited for about 15-16 stacks, then moved him to Air and left him there until second intermission. After that was over, we pulled him into the Frost quadrant and the add spawned in the middle.

On one prior pull we managed to pull boss through the middle and spawned the Primal Avatar before the second intermission, only to find that when that intermission ended we got a second one. We believe this is not intended, but using the above method you wouldn't meet the criteria to spawn it until after the second intermission, making this not matter. Keep in mind that if you're doing the above method, you will get a random second add in the first intermission instead of choosing which one you want with earth. This means you could get frost and earth and have a bad overlap with Freezing Tempest and Ground Shatter. We lucked into earth and air so this wasn't a problem for us.

As for the add itself, it has low health and dies quick. It does need to be tanked and the only thing it does is cast one of four spells for each of the elemental types, which all spawn the same swirlies on the ground. These swirlies land fast and will do 300-400k damage so they'll likely oneshot anyone who's hit.

If you have any questions about the achievements feel free to add me to Btag or Discord!

Btag - FrostyShot#1667
Discord - Yarini#9999

In case it wasn't obvious, this achievement name is a reference to Captain Planet and the order the Planeteers summon him. Earth, Fire, Wind, Water (no heart obviously), followed by Captain Planet saying 'The power is yours!"
Bit of nostalgia :)

Easy Fun Solo for Level 80-100 Worldsoul Saga & Beyond...

1. Normal Difficulty.

1b. Achievement tracker criteria will turn from red to white upon completion of requirements.

2. Head to Earth. Begin fight. You have to drag the boss from Earth, Fire, Air, Frost.

3. Having dragged the boss to Earth, bring boss health down to 80%, then run down the middle to get to each required side.

4. Drag boss to Fire, bring boss health down to 50%

5. Drag boss to Air, bring boss health down to 30%

5b. You may get his center phase & adds during this, just kill the adds that spawn, but don't kill boss.

6. Drag boss to Frost. Suddenly and without warning the PRIMAL AVATAR has spawned in the middle! Kill her!

7. Criteria tracker has gone from red to white, kill boss.

8. ?

9. Profit. Achievement Completed.