[100% Guide] Achievements of the Sea

A complete overview of the different achievements and how to unlock them.

Characters

Gill Joins the Crew: Unlock Gill
Randomly obtained from a box when you land on gray tiles


Shelbie Joins the Crew: Unlock Shelbie
Clear one combat without firing cannons


Betty Joins the Crew: Unlock Betty
Unlocked when stunned 50 times


Krillstoph Joins the Crew: Unlock Krillstoph
Obtained where you get to choose a reward between two options. It is the tile with the double arrows pedestal icon


Finley Joins the Crew: Unlock Finley
Recycle the rewarded three planks into the Siren's well after clearing the first chapter


Lotte Joins the Crew: Unlock Lotte
Complete a chapter without taking damage


Quill Joins the Crew: Unlock Quill
Complete a run


Cluck Joins the Crew: Unlock Cluck
Unlocked when all types of bird eggs are used once (Normal, Fire, Ice, Resonance, Oil and Explosive). To complete this achievement, you will need to purchase the Explosive Eagle from the merchant Briny (Rainbow Peacock is not necessary but can help as it will give you random eggs)

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Progression

Tutorial Achievement

It's the Aquapocalypse: Complete the Tutorial

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Bosses Achievements

Shadow of the Undergrowth: Defeat Tentacles
Complete the first chapter


Tyrant of the Deep: Defeat Claws
Complete the second chapter


Harbinger of Hoarfrost: Defeat Heads
Complete the third chapter


Eye of the Storm: Defeat Eye
Complete the last chapter

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Sea Monsters Achievements

Powder Fool: Destroy 100 sea monsters


Ship Gunner: Destroy 1000 sea monsters


Master-At-Arms: Destroy 10000 sea monsters

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Other Progression Achievements

Reflector: Reflect two projectiles at once


Tendrils...: Buy your first upgrade


Curse Lifter: Lift a curse


Gold Plating: Max out a cannon
Level up a cannon to level 10


Old Sea Dog: Complete solo run


1 + 1 = 3: Complete co-op run


The Perfect Crew: Complete a run without taking damage


All the Treasures of the Sea: Buy all upgrades
You need to purchase every single items/upgrades from the four different NPCs in the Great Lighthouse base

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Deep Sea Duo DLC / Great Lighthouse Update (05/2023)

Deep Sea Duo DLC Achievements

Hoarder: Complete a run while holding 20 trinkets using Jules


Let There Be Light: Hit 7 enemies with a single reflected projectile using Angus

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Great Lighthouse Update Achievements (05/2023)

Climate Change: Repel nearby storm using The Beacon
Clear the first level of the Lighthouse to unlock The Beacon. Then you will need to insert one tendril in the Beacon to activate it and use it on the map to repel storm tiles


Special Delivery: Fulfill a Siren's request
Go to the tile with the orange bottle and use the harpoon to pick up the bottle floating in the sea right after the battle. Bring the item mentioned on the note to a Siren at the end of a chapter


Glass Cannon: Complete a run while having 3 Holy Artifacts still standing
You will need to get 3 Holy Artifacts by doing the same process as the Special Delivery achievement for each chapter and complete the run


Buried Treasures: Buy a scavenged item from Barnaby
Barnaby will give you a random item for 5 Tendrils at The Great Lighthouse base. Unlock this NPC by clearing level 7 of the Lighthouse


The Great Lighthouse: Unveil the mysteries of The Great Lighthouse
Clear every level of the Lighthouse

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Water Garden Duo DLC / Fish & Ships Update (11/2023)

Water Garden Duo DLC Achievements

Belting Overseas: Put 20 enemies in resonance at the same time using Mikoi's ability
Can be easily done during Tentacles combat. You just have to wait for the phase when Tentacles spawn a lot of Slurgs


Catrate Master: Reflect three projectiles at the same time using Noh's ability
Can be easily done during Tentacles combat. You can charge your reflection just before Tentacles spawn a lot of Slurgs. Some tiles filled with Beakaneers in The Edge area are also great for this achievement

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Fish & Ships Update Achievements (11/2023)

A Whale of a Time: Complete a run with the Wavehulk


Reduce Reuse Recycle: Complete a run with the Siren's Call
You will need to complete a run with both the Stormstrider (default ship) and the Wavehulk to unlock the Siren's Call


Beast Tamer: Complete a run with the Red Scourge
You will need to complete a run with the Siren's Call to unlock the Red Scourge


Festive Fleet: Adorn four ships with delightful garlands
Complete a run with the 15 lighthouse brightness levels activated to get the garlands for a ship. Do the same for all the different ships

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Help Spread the Word!

[Udderly Milky]

For the island completion achievements:

Once you get to the final zone you will need to save a new NPC. Use the first ship and stack some tendril chests to ensure you can make it there. After that in each run he will ask for items throughout your run. As long as you give him enough items over the course of the run he will build something new in town. It appears to swap between unlocking an egg (modifier) or building a new thing on the island.

Good old days, pew pew, M'lady, Ship of Fog, and Mirror. Complete a run with each of these modifiers active. Not too difficult. Fog may throw people off as planning is thrown out the window.

As it should have been, complete the island.

[Udderly Milky]

Apex Predator - Collect every enemy bounty using Hanha. Her ability spends 100g to mark a target with a bounty. For this achievement you need to mark every type of enemy and unfortunately it is random. I would try to isolate the enemy I wanted to mark. The announcement page of the update has a nice chart for you to keep track of. If you miss one from a world, stack tendrils and spend time in the final zone as monsters from all zones can spawn there. Highly recommend finding a solution to generate money.

Fool's Gold - Using Goldie use her ability, costing 100g, to dig up a treasure chest. It took my 3.5k to dig one up, just be lucky. Can be dug up anywhere, I got mine while on the boat.

[Udderly Milky]

The newest update added 10 new achievements.

They can be grouped into two main categories, new fool challenges and new island unlocks.

Fool Challenges:
Arc Nemesis - Using Gastropaul block 20 blocks in a run. This one is super easy. Rolling charges up a shield. I easily farmed this when I only had an octopus on screen. You can also farm this on the boss fights but it is really easy to farm on lone octopus.

120 Volts - Using Eelvis shoot his electricity multiple times during one combat. I found a longer combat and stopped by autocannon from shooting and just rolled until his charge was ready, drop cannon and shoot the enemy. Useful to do on slow long combats with some predictability.

[Salamander]

New achievements in game, any help ? :)

[Pills & Chips]

it's really sad that some achievements gotta be unlocked in your world (you being the host) and wouldn't be unlocked for the other player...

[Memmi]

Just wanted to let you know that I unlocked cluck after using explosive eggs but before I knew peacock existed/ was released. (and then cluck processed to spawn everywhere like a weirdo lol)

[Pips~]

I take back my previous comment, on the second spawn of slugs and if you wait for the tentacles to come up again there is definitely enough, I was only counting the first time which seemed to spawn less. (might be a coincidense and it has some rng to amount)

[Pips~]

For Belting Overseas, the tentacle boss does not seem to spawn anywhere near enough slugs to get it there. Final boss should spawn enough enemies though was just hoping to find an earlier point to get this done quick.

[RX]

Also, the "All the Treasures of the Sea" achievements should be working as intended now (was bugged for me and got the achievement when I relaunched the game after Nov update)

[RX]

Updated the guide with latest achievements (Fish & Ships update). Not 100% sure about the "Festive Fleet" achievement but it seems that you need to complete a run with all the ships with the 15 lighthouse brightness levels activated.