Help with Magical Prison Quest

[Vorgoth]

Right now I am unsure if my quest is bugged or I missed something so I was wondering if I could get help. At the moment I have 5/6 of the braziers lit at the bottom of the tomb and I have the key from the well in your capital. Since I am unsure what to do next or where to go (as nothing was marked on my map) I would like someone who knows and/or did it to list the necessary steps to unlock this door.

I am aware that I have to kill named mobs but which ones and what are their locations?
Named mobs I remember killing: Named Nightmare, Black Dragon, and since it has been a while that is really about it so if someone could write me a list I'd appreciate it... atm I am 50% sure my quest it bugged, and if it is I will just move on and ignore it but I am quite curious so any help would be appreciated :)

[ManicMuncher]

I am having the same problem. I have hit every node in the map except castle of knives and am at 5 of 6. If it's bugged, fine. If not where the hell are these mobs?

[[BWC] Firefly]

You need a high perception. I got my key after I had explored most of the map, and it auto-populated the number of charges down. I had one charge remaining and thought I had wiped all the mobs on every map/instance. I was mistaken -- I found "Empty Skull Barrow" down south of the map, near Brineheart.

[Morgrel76]

Found this list:

Shrike Arbor Rock
Shrike Old Mesa
Shrike Riverine Rise
Shrike Ratnook Hill
Shrike Trail in the Hills
Kamelands Bald Stones
Kamelands Empty Skull Rock Has two caves, must clear both
Dire Narlmarches Baneful Bog
Dire Narlmarches Dappled Quagmire
Dire Narlmarches Swamp Ruins
Dire Narlmarches Tenacious Marsh
North Narlmarches Glade in the Wilderness
North Narlmarches Tuskgutter's Lair
South Narlmarches Hodag Lair
South Narlmarches Monster Den
Dunsward Blood Furrows
Dunsward Rinderpest Burial Ground
Glenebon Charred Ruins
Glenebon Country Road
Glenebon Fossil Fields
Glenebon Giant's Palm
Glenebon Raspberry Gully
Glenebon Serpent Trail
Glenebon Two-Faced Hill
Glenebon Wicked Field
Silverstep Dragonleaf Gulch
Silverstep Precipice Trail Borders with Tors of Levenies
Outskirts Old Oak
Pitax Giggling Hill
Pitax Ornate Ruins
Pitax Wicked Hill
Varnhold Crooked Teeth Connected via Portal with Rotten Cave
Varnhold Hilltop Trail
Varnhold Rotten Cave Connected via Portal with Crooked Teeth
Varnhold Spider Lair
Varnhold Unfinished Clearing
Tors of Levenies Collapsed Passage
Tors of Levenies Little Sellen Source Borders with Silverstep
Tors of Levenies Shivering Glade
Thousand Voices Carnival Glade
Thousand Voices Forest Ballroom
Thousand Voices Gnawed Rocks
Thousand Voices Grocery Stalls
Thousand Voices Ilthuliak's Lair
- Oak-That-Strayed Borders with Outskirts

at https://pathfinderkingmaker.gamepedia.com/Magical_Prison
but i cannot find:
Thousand Voices Carnival Glade
Thousand Voices Gnawed Rocks
Thousand Voices Grocery Stalls
Thousand Voices Ilthuliak's Lair

[Lightning]

Ithuliak's lair you can do in Ch5 in the Pitax region up near the top left of the map, Grocery stalls down south same area map I believe, not sure about the other 2, might be best just to google the full map locations with all the names on it if you can't find it

[Morgrel76]

Ok to find the last ones, u need high espionage and the quest to scout pitax