I'd wager if you can stay in the "berserk" HP range, you'll have no problems holding aggro at all with a Wurmy. Or most weapons, for that matter.

Much easier to do at lower levels though, obviously.

Otherwise, yeah, I'd go with dps weapons. I've seen level 1 Monks running around with epics, let alone the other twinks out there. Obsidian shards just don't cut it.

Genuine question; does berserk actually do anything to increase aggro? If so how? Are crip stuns higher aggro than a normal melee hit?