Advent's Amazing Advice

Stranger Things: The Hunt for the Thessalhydra (Part 1)

Added 2025-06-07 00:32:00 +0000 UTC

Congratulations to those who guessed the Adventure correctly! It is none other than Stranger Things!

Welcome to the final Starter Set by WoTC; until the next one arrives! Inspired by Stranger Things and written by Mike Wheeler himself, this adventure drops your players into a monster hunt like no other. Summoned by Sir Tristan, ruler of a remote mountain realm, your party is tasked with tracking down a fearsome creature known as the Thessalhydra, which has attacked his castle and terrorized the land.

In Part 1, your players will explore a mysterious forest, encounter travelers, priests, and farmers, until they uncover the entrance to the troglodyte caverns. There, they can fight or negotiate their way deeper until they reach the ever-shifting Cursed Labyrinth. Should they solve the riddles of the mysterious Lost Knight, they will be greeted with a portal...to the Upside Down.

Without further ado:

Link to: The AAA Collection (Part 1)
Link to: Stranger Things Adventure
Link to: Stranger Things The Hunt for the Thessalhydra Playlist

Included in The AAA Collection is:

Downloadable copy of DM Notes, including links to music tracks for ambiance and fights
Special PDF for all encounters. This includes the enemy stat blocks organized neatly, along with an initiative tracker and spots to mark HP
Custom Maps of Troglodyte Cavern (Credits: Mechatoine and Austinmiles)

Index:
Stranger Things: The Hunt for the Thessalhydra:

Part 1 - Intro/Troglodyte Cavern
Part 2 - Lair of The Thessalhydra

As always, if you see something you think I can improve, add, change, etc., please let me know.

Cheers,
Advent

Credits:
Art: Johanna Taylor
Campaign: Wizards of the Coast