Firelords of Sethria’s Roost Achievement: Kill Andrazor, Fah Jarakk, Searris and Kelbnar

Hunt down and slay the following minions of Ragnaros in Sethria’s Roost, Mount Hyjal – Andrazor, Fah Jarakk, Searris and Kelbnar.

Hunt down and slay the following minions of Ragnaros in Sethria’s Roost, Mount Hyjal – Andrazor, Fah Jarakk, Searris and Kelbnar.

To get this companion, the easiest way to do this as a horde is to go to Brill. Buy one Special Chicken Feed from William Saldean (Grain & Feed Vendor),
Angry Little Squirrel -Look for the non-NPC squirrels on trees in the Regrowth. These squirrels throw nuts at enemy NPCs, just stand nearby and wait for a “bonk” noise and you will get the credit.
Alpine Songbird – Kill Millagazor while doing the Call the Flock
Hyjal Bear Cub – Toss a bear on a sleeping Core hound instead of the trampoline while doing the Those Bears Up There daily
Child of Tortolla – Punt a childĀ of Tortolla at a fire elemental instead the water

To get this achievement you must have done Through the Gates of Hell of the Fireland dailies to unlock the Widow’s Clutch.
Speak with the following characters during the attack on the Molten Front to complete the Fireside Chat Achievement.

I managed to complete the quest where Leraya defeated Arch Druid Hamuul by burning him but until now I still haven’t got the Into the Depths quest chain. This is the last one I need to complete the the Legacy of Leyara achievement.
Does anyone know any leads on this one?
On the other hand, the quest title is same with the old obsolete level 51 quest where you need to “Find the Altar of Hakkar in the Sunken Temple in Swamp of Sorrows”. Makes me think Bliz is synonymous to recycling.