Lost: Lagoon Walkthrough

The final area is a dark, circular cavern. The boss is Morgath, the Lost Serpent—a massive eel-like creature with three glowing weak points on its back.

Before you take a single step onto the muddy banks, you must understand the three core biomes of the Lost Lagoon:

You have navigated the Mangrove Maze, solved the Sunken Temple’s water puzzle, snuck past the Watcher Idols, and slain the Lost Serpent. Whether you are a completionist hunting every last pearl or a casual player just wanting the story, this walkthrough has provided the roadmap to success. lost lagoon walkthrough

The Lost Lagoon is no longer lost—it is yours.

Final Tip: Save your game immediately after the boss cutscene. A known bug in version 1.2 can reset your water level puzzle progress if you quit without saving. The final area is a dark, circular cavern

Now, take a breath, check your inventory, and dive into the next adventure.


Did this walkthrough help you? Leave a comment below with your fastest boss clear time. For more guides, check out our Ultimate Collection of Hidden Level Walkthroughs. Did this walkthrough help you

  • Puzzle B — Light crystal alignment:
  • Puzzle C — Water pressure valves:
  • The eastern path is blocked by three large roots that move up and down like an organ pipe. You cannot break them—you must time your run.

    Immediately after the roots, you will find a Save Statue (or auto-save trigger). Do not miss it.


    Secret Alert: Before leaving, dive back down. Behind Valve I is a breakable wall. Smash it to find the Pearl of Recall (a one-time revive item).