Are You Even Trying?

Do not pull this boss until you have a firm understanding of what to do, as it's currently bugged. If you hit the Zaqali Boltthrower with a pebble and then wipe it will not respawn with the others and you have to reset the instance to get the achievement.

With the disclaimer out of the way, the achieve is not that difficult. Off the edges of the balconies are the 6 mobs you have to hit for the achieve. Some are rather small and hard to see, so I'd recommend you /target them before the pull and get them marked so they're easier to see. They can all be seen from the south balcony, and all but the Rock Snail and Cave Beetle can be seen from the north balcony.

I didn't think to take many screenshots, and ended up with no screenshots of the Rock Snail of Cave Beetle so all I have is this super scuffed screenshot.

1 - Siege Mammoth
2 - Ember Mouse (pats along the path I drew with the arrow)
3 - Zaqali Boltthrower (pats among the Ballistae but spends a lot of time stationary)
4 - Magma Slug
5 - Rock Snail (off the screen to the right)
6 - Cave Beetle (off the screen to the right)

To get the pebbles you need to pick up the rocks spawned by the boss casting his tank frontal in P2 and then take those rocks into the next tank frontal. They will then shatter giving you a new extra action button with 3 pebbles that can be thrown super far. You use these pebbles to hit the 6 mobs you need for the achievement and can then kill the boss. The only one that you might have to think about is the Ember Mouse. Because it pats so far and moves fairly quickly, the travel time of the pebble has to be accounted for and you need to lead the shot a little bit to predict where it will be. Luckily you get a ton of rocks and even non-tanks can live the frontal on normal so you can have lots of people pick up and throw. Just keep in mind if you're doing this then you'll have fewer rocks to throw on the climbing adds and more to kill.

As mentioned above, we had a wipe after hitting the Zaqali Boltthrower and it never respawned when the boss did, but the othrer mobs we needed did. We sat for a while and waited to see if he would spawn, and tried resetting the boss but nothing worked. We ended up resetting the instance and that seemed to work. When we killed it the first time without the Boltthrower being hit we decided to hit the other 5 anyways in the hope it would give us the achievement anyways and while it didn't, it did give us credit for the other 5 after the boss died, so it seems you can get these done across multiple kills if needed.

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

Moderate Difficulty Solo for Level 80-100 Worldsoul Saga & Beyond...

0. This will be much easier for most Level 90 classes during Midnight, but definitely doable in The War Within at Level 80.

1. Normal Difficulty.

1b. Achievement Tracker enable for criteria completion is of the utmost.

2. Standing at the edge of the southern platform, look down and mark each of the criteria with a different raid marker: /Tar Ember Mouse, /tar Siege Mammoth, /tar Rock Snail, tar Zaqali Boltthrower, /tar Magma Slug, /tar Cave Beetle

2b. Some of these are off to the side, and may be out of view distance. Don't worry, eventually they show themselves.

3. Begin fight, keep boss on you or your pet, but close by so you can get the cone cast when it's time.

4. I was killing the wallclimber adds as priority, as they are the ones who will run to the door and start hammering on it, which will result in a debuff that stacks immensely, eventually resulting in your death. Kill these asap as they run to the door.

4b. In essence, kill any mobs that are hammering on the door or you'll find your health begins to drop.

4c. I didn't worry about the Mystic adds, that remain on the platforms, unless it was convenient to kill.

5. Eventually the glowing rocks on the ground will spawn, pick up one of the rocks, then stand in the cone the boss eventually casts. This turns your rock into a nice throwing pebble.

6. Head to the edge and throw the pebble at one of your targets. Rinse & repeat until all targets are hit with the pebble. All the while preventing adds from hammering on the door.

7. With all achievement criteria turned from red to white, kill boss.

8. ?

9. Profit. Achievement Completed.

Do not reset the boss for hero or anything before your actual pull! It will bug out the Zaqali Boltthrowers and there won't be any when the boss spawns again. You'll have to get out and reset the instance for them to be back.