Swamp Kraken

Swamp Kraken is the Thirteenth boss you will face and its element is Earth/Water so it is weak against Ghost/Wind and it is strong against Wind/Fire. You can face it in the Misty Marsh  or at the Summoning Stone. If you beat it 10 times, you will get the achievement Kraken Killer. It drops Wriggling Roots which can be used to craft Swamp Shaman Robes  or Hydra Scales which can be used to craft Hydra Hunter's Mail. Beating Swamp Kraken on Epic stage gives access to the Zephyr Plateau .