: Provides Steam keys for Windows, Mac, and Linux. PC System Requirements

: Go to the Toxic Sewers and talk to the NPC found there to receive a new pet and a key.

: You will progress through the Infested Shipwreck , the Lighthouse , and finally The Crown to face the Queen.

For a visual walkthrough of the new areas and how to reach the final boss, check out this gameplay guide:

Once installed, you don't start the DLC from a menu; it is integrated into the game world:

: After this fight, use the key you obtained earlier to enter the new area by taking the boat at the bottom.

: Follow the messenger's instructions to explore this area.