Want to reach the Second Sea in Fisch!? This How to Unlock the Second Sea in Fisch guide will walk you through the steps to unlock and access the Second Sea, including how to defeat the powerful Cthulhu boss. Follow along, and you’ll be sailing into new adventures in no time.
Step 1: Travel to Terapin Island
Spawn a boat and sail towards Terapin Island.
Upon arrival, walk straight ahead and interact with the Sea Traveler NPC.
The Sea Traveler will check if you’re prepared for the journey. If you’re ready, you’ll be teleported to a new area.
Step 2: Enter the Second Sea Portal
After teleporting, proceed forward and talk to the NPC guarding the gate.
If you’ve met the requirements (or possibly none at all), the gate will open.
Walk through the gate to trigger a cutscene.
After the cutscene, a large door will open, leading to a queue area.
Step 3: Join the Queue for the Boss Battle
Stand in the queue platform to begin the waiting process (approximately 2 minutes).
Once the timer runs out, you’ll be teleported into a boss battle arena.
Step 4: Defeat the Cthulhu Boss
The main challenge before reaching the Second Sea is the Cthulhu boss fight. Follow these steps to defeat him:
1. Understanding the Boss Fight Mechanics
Cthulhu has multiple health bars, represented by different colors.
To deal maximum damage, match your Keeper’s Torch flame color to the boss’s current health color.
If you use the wrong color, you’ll do minimal damage.
2. Getting the Keeper’s Torch and Imbuing Flames
The Keeper’s Torch is automatically added to your inventory.
To attack Cthulhu, you must first imbue the torch with a flame:
Approach a flame source.
Press E to imbue your torch.
Ensure the flame color matches the boss’s health bar color.
Attack Cthulhu with the imbued torch flame.
Repeat the process when the health color changes.
3. Avoiding Cthulhu’s Attacks
Cthulhu launches AOE attacks that turn the ground red—stay out of the highlighted areas to avoid damage.
Use movement tools like the Advanced Glider to dodge effectively.
4. Dealing the Final Blow
Continue attacking with the correct flame color until Cthulhu is defeated.
If you die, you might be able to rejoin the fight immediately, but sometimes you may need to restart.
Step 5: Entering the Second Sea
Once Cthulhu is defeated, you’ll automatically be teleported.
Congratulations! You have now reached the Second Sea in Fisch!