Quick Answer

To run the Two-Headed Serpent successfully, focus on keeping the pace fast, lean into the Pulp Cthulhu rules, and prepare the globe-trotting locations in advance so the action never stalls.

Why the Two-Headed Serpent Demands a Different Approach

The Two-Headed Serpent is not a typical Call of Cthulhu campaign. It's designed for Pulp Cthulhu, which means the tone is more action-hero than cosmic horror. Characters are tougher, more capable, and expected to dive into danger rather than run from it. As a Keeper, you need to adjust your mindset: this is a game of two-fisted action, not slow-burning dread.

The campaign spans the globe, from the forests of Bolivia to the streets of New York City. This structure gives you a natural episodic rhythm, but it also means you'll need to prepare distinct settings and keep the momentum between them. The key is to treat each location as a set piece that pushes the story forward.

Balancing Action and Investigation

Even in Pulp Cthulhu, investigation matters. The Two-Headed Serpent includes plenty of clues and mysteries, but they're woven into action sequences. Your players will be chasing leads while being chased themselves. The challenge is to keep the investigation moving without letting the action overwhelm the plot.

A common mistake is to run every scene as a combat encounter. Instead, use the investigation to drive the action: a clue found in a temple might lead to a chase through the jungle, and a conversation with a Mafia informant might end in a shootout. Let the players' choices determine when the action happens.

Step-by-Step Guide to Running the Two-Headed Serpent

  1. Read the Campaign Thoroughly: Before your first session, read the entire campaign book. Understand the overall plot, the major factions, and the key locations. This will help you foreshadow later events and keep the story coherent. Make notes on each chapter's hook and how it connects to the next.
  2. Set the Right Tone with Your Players: Hold a session zero to explain that this is a Pulp Cthulhu campaign. Emphasize that characters are heroic and action-oriented, and encourage players to create characters who are proactive and ready for adventure. Ensure everyone is comfortable with the more action-heavy style before you start.
  3. Prepare Each Location as a Set Piece: For each major location (Bolivia, New York, etc.), prepare a few key scenes that can play out flexibly. Think of each location as a mini-adventure with a clear goal, obstacles, and a memorable climax. Have a list of NPCs and encounters ready for each location to keep the pace up.
  4. Use the Pulp Cthulhu Rules to Your Advantage: Encourage players to use their Pulp abilities, such as extra hit points and luck points. As a Keeper, design challenges that allow them to shine—chases, fights, and daring escapes. Don't be afraid to let them succeed in spectacular ways. Remember that the rules are meant to make heroes feel powerful; use them to create fun, over-the-top moments.
  5. Pace the Campaign with Cliffhangers: End each session with a cliffhanger that propels the story forward. The globe-trotting structure makes it easy to cut between locations, so use that to your advantage to keep players eager for the next session. Plan a 'cut scene' that hints at the next location or plot twist to maintain momentum.
  6. Adapt to Player Choices: The campaign is not a straight line. Be ready to improvise if players go off-script. Use the core plot as a framework, but let player actions shape how events unfold. This will make the campaign feel personal and dynamic. Keep a list of 'rumors' or side events that can be inserted if the party diverges from the main path.

What You Need to Run the Campaign

  • Call Of Cthulhu: Two Headed Serpent: The Two-Headed Serpent is an action-packed, globe-spanning, and high-octane campaign set in the 1930s for Pulp Cthulhu. The heroes face the sinister conspiracies of an ancient race of monsters hell-bent on taking back a world that was once theirs. This is the core campaign book you'll use to run the adventure, providing all the locations, NPCs, and plot threads you need.

    Call Of Cthulhu: Two Headed Serpent

    Call Of Cthulhu: Two Headed Serpent

  • Call Of Cthulhu: Pulp Cthulhu Core Rulebook: Pulp Cthulhu is the game for players who want to swing on a vine into a temple of an ancient evil, kick the forbidden scroll from the hand of the cult leader, and stand on the wing of a steadily ascending biplane. This rulebook provides the more heroic character options and rules that make the high-octane action of the Two-Headed Serpent work smoothly.

    Call Of Cthulhu: Pulp Cthulhu Core Rulebook

    Call Of Cthulhu: Pulp Cthulhu Core Rulebook