The only bad one here is possibly you.
This time, the only demon I used help for was the Silithus one, yes, I used the warlock trick. That’s not even close to “half the guild” helping me.
Consumables: Elixir of Demonslaying, Major Mana potion, Greater Shadow Protection Potion.
If you don’t manage to do the others solo with average gear, you are just bad. Or at least, worse than me.
And back in Vanilla (the real one, not cheesy private servers), I did them all without help. I did the silithus one in the middle of the desert and not at the AQ gates, just circling him to avoid the bettles.
All with my MM based spec. Not with your crappy survival spec.