What’s the earliest you can get the Unholy Hidden Appearance? I’m currently level 104 and still haven’t procced the special Orc. I was hoping to get it ASAP to start unlocking the 1000 PvP kills on my way to 120.
Go to the Broken Isles Acherus, and use the Proving Grounds to get constant resets on Army and Apocalypse. Queue in, start the encounter, Army up, build and burst one Apoc, leave, then rinse and repeat until you get it.
As far as I know, this is still the most efficient way to spawn ghouls for the chance. Don’t forget to run the script that checks for the hidden quest every once and a while, just in case you visually miss the special ghoul.
That’s what I’ve been doing. Just not sure if I can even get the thing to spawn at level 105
It’s totally random, I didn’t see mine for about 3/4 the expansion, granted I was running around in frost a lot. I don’t know if they adjusted that requirement like they did for other hidden appearances. They might have though. Hopefully it’s soon, just keep your eyes peeled on them.
Looks like you will need an artifact knowledge level of six though. Here’s a guide:
Artifact knowledge isn’t a thing anymore, but some of the hidden appearance unlocks had their artifact knowledge translated into a level requirement.
Level 108 and no drop yet. If AK 6 was originally only achievable at 110 chances are they made it only drop for levels 110+ 
Artifact knowledge wasn’t level gated to 110…