Just nearly lost my forest goblin fort to an attack by a named fenbeast in the late fall of year 1. The fort was a short wooden palisade with a wooden door for a gate, with hemp tents scattered around a log longhouse inside. Scaregoads the Spiral of Killers rushed into the hold and toppled the gate-door, and the giant spider roaming around inside the perimeter immediately attacked the thing. They fought for a while with neither getting a hit in on the other, until Scaregoads managed to grapple the spider and break it's legs. The spider couldn't really dodge anymore, and didn't last too long after that.
So I ordered everyone (13 goblins) to go hide in the longhouse and pick up the bone choppas I'd stowed away in there for emergencies like this one. The tents didn't have doors, so Scaregoads came straight for the longhouse. The goblins all attacked it, but they really didn't stand a chance. Lucky hits would chip and fracture, but Scaregoads didn't really seem to care, and was surprisingly good at dodging. It killed four goblins by throwing them, and seven more died from having things pulped/crushed or bleeding out. Scaregoads did eventually die, after a weaver got a lucky shot to the head in, but he and the other survivor are all too heavily injured to do anything. Hopefully migrants show up before they die and can help them out. I'd like the weaver to live, at least. I'll have to invest in a proper militia and some piercing weapons too, I think.
Anyway, pretty much everything with them seems to be working properly. The effects at the altar seem to work, but I never got a spider. That's supposed to be pretty rare though, right?. A lot of the combat skills have the same name as well, which is sort of confusing. If these guys die I'll try out the hobgoblins.