This tame is like the Rock elemental, but do not shoot it in the head. Shoot it right in the back of it's shell. Anywhere else will kill it fast.

Please add how many boulders needed

If you are missing with your catapult and it's dying, drag dino corpses to it and let the karkinos eat the corpses. It will heal him up a lot then try again with the same torpor you left off with.

Knock out with catapult. Make sure to hit body to do torpor. Hitting legs damages it and doesnt knock it out. Shove rotten meat in it.

Give it money