The official GemStone IV encyclopedia.
Long barbed spines erupt outward from the cavern urchin, almost completely covering its body. The spear-like growths form a formidable defense, and also pose a lethal threat to anything that might find itself close enough to become impaled upon the spiked ends.
Urchins have a maneuver attack where they throw their spines at their opponents. This attack can be blocked by a shield.
This attack removes air wall before doing damage:
A spiked cavern urchin launches a barrage of spines, the barbs exploding outward at you!
The spines are deflected by the wall of air surrounding you.
The air calms down around you.
Urchins can also shake off stuns, although it does not always end in success.
A spiked cavern urchin clatters its spines together in a feeble attempt to shake off the stun.
Clattering its spines together, a spiked cavern urchin shakes off the stun.
Urchins need to be skinned with a blunt weapon rather than a dagger.