To shed some light on this guy, and the camp.
His AE is conical, so positioning can allow only the tank to be hit with it, overall, not a big issue.
His spawns, after spending a few days at the camp here's how it goes:
around the +600 +375 +550 loc, he can spawn in 1 location in that room.
which is roughly +610 +357 +549, and the PHs are either 'a weed eater' or 'a steamwork shock striker'. The PH/named is a static spawn, and not too hard to pull w/ SK or MNK.
I have also seen him spawn in the other pod, roughly +455 +465 +550, in place of the wandering mob in this pod. PHs Ive seen are 'a weed eater' and I think one of the caster gnome models (torturer or flamemaster).
Belchforth himself, is a pushover. max hit 3k, but its slow, immune to snare/root, BST slow did land partially. Overall a quick fight to disc through.
Worthy of comment, is Cotongle, the other named in the first pod, his PHs is the wandering 'a gardener'.
He is a pita, 2 'a weed eater' spawns, and he just gets in the way of pulls and whatnot, so keep an eye out.
GL to anyone camping Belchforth

Alloy-Linked Wristguard
Belchforth Pearl
Glossy Silk Wristband
Scratched Hide Wristguard