I'll Make My Own Shadowflame

On the left hand corner of the room as you walk in, there's a Forgotten Specimen Tank.

Hitting it with [spell=404732] from the fire elemental will turn it red.
Hitting it with [spell=405016] from the void elemental will turn it purple.
Hitting it with [spell=405641] from the main boss in P2 will spawn an add called Shadowflame Remnant.

We started the fight by pulling the fire elemental to the Specimen Tank and facing him towards it since it's always in front of him. When he casted Meteor we had the fire team soak it, then pulled him away so the void team could drop the next set of Umbral Detonations on it. Then we pushed the bosses to 50% and when in the last phase we dropped a Blistering Twilight on it, which spawned the add. The add must be killed before the boss dies to get the achieve and it has quite a bit of health but does nothing of note.

If you need help with the metas feel free to add me to Btag (NA only) or Discord!
Btag - FrostyShot#1667
Discord - yarini

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

1. Normal Difficulty.

1b. Achievement tracker can be enabled and will turn from red to white upon criteria completion.

2. Notice to your left, at the back wall, as you walk in there's a Forgotten Specimen tank in the corner.

3. Begin fight. Drag bosses near the tank and let them cast Fiery Meteor and Umbral Detonation on top of it. You'll notice above the tank, little orbs have lit up to signify that they have been applied to the tank.

4. Kill the two mini bosses, who then converge into a larger boss.

5. Then pull the larger boss to the tank and let him put Blistering Twilight onto the tank

6. Noticing the tank has all 3 orbs above it, it has now shattered and a Shadowflame Remnant has spawned!

7. Kill the Shadowflame Remnant, criteria has been met. Now, kill the boss.

8. ?

9. Profit. Achievement Completed.

If you kill the add and then wipe you will need to reset the instance for the add to spawn again