Okkam

About the Okkam
The Crab is a very large creature, and can only be found on Hard maps, usually at the center. It's official name is Okkam, but the vast majority of players call it "Crab" but sometimes it's also called "Spider". It is an extremely large arthropod, possessing attributes of crustaceans, beetles, and arachnids. In the world of the game, unless a larger one is added or alluded to in lore, it is likely the largest arthropod to have ever lived. The Okkam possesses immense strength, being capable of utterly destroying a large walker in just a few hits. It is also highly aggressive, attacking any players or walkers it sets its sights on.

It has 9000 HP (Hard surface) and can be killed with Mounted Weapons. From experiences, there can be multiple (2 or 3) crabs on a single hard map, but we don't know it is intended or a bug.

Unconfirmed sources said, the Crab only drops Chitin Plate and Bone Splinter when killed and harvested with Axes, Sawblade or Pickaxe.


 * One of the Steam Achievements is related to the Crab - Local Crab rave - which includes killing an Okkam.

Beware the Okkam
It is a lot faster when you are on a walker (this includes being grappled onto one). You can easily outrun it on foot, even without swinging, so that is a good way of baiting it away from your Walker/Base. It used to not de-aggro, but since a recent update once your somewhat far away, it will lose interest (unconfirmed, reports now indicate it will still chase you to the border). Okkam will often attempt to shake boarders by climbing rocks vertically.