For a visual walkthrough of the new areas and how to reach the final boss, check out this gameplay guide:
: Go to the Toxic Sewers and talk to the NPC found there to receive a new pet and a key. Dead Cells: The Queen and the Sea Download PC Game
Once installed, you don't start the DLC from a menu; it is integrated into the game world: For a visual walkthrough of the new areas
: After this fight, use the key you obtained earlier to enter the new area by taking the boat at the bottom. Dead Cells: The Queen and the Sea Download PC Game