From Guild Wars Wiki
Obsidian Behemoths are
rangers found in
the Underworld. They spam traps to defend themselves from melee attackers and attack at range for high damage.
[edit] Location
[edit] Skills
(16 Expertise in Hard Mode)
[edit] Items dropped
- When fighting Obsidian Behemoths make sure that every single Behemoth is being attacked to prevent them from activating Healing Spring. Skills such as Barrage work well for this.
- Contrary to their name, Obsidian Behemoths do not drop Obsidian Shards.