Here is the full list of all 19 The Sea Will Claim Everything achievements.
Discover the meaning of the ancient phrase.
Have some tsipouro.
Frubble frubble frubble frubble.
Guide Sunsquid back to the Electric Continent.
This achievement contains tofu.
Heal Underhome.
Reject Lord Urizen's dogma.
Help the people of the Isle of the Moon.
Help the people of the Isle of the Stars.
Gather all the Tokens of the Tomb of the Timber Tyrant.
Help Niamh with her research so she can go back home.
Help the people of the Isle of the Sun.
Derek knew everything about alchemy, too... or so he thought.
The mouse had achievements before everyone else did.
Set sail to explore the Fortunate Isles. You're not sure what ahoy means, but it sounds nautical.
Did you make a cookie for the thoughtful lizard?
Find all 700 collectibles!
A smelly old achievement found in a box.
A bit of code The Mysterious-Druid accidentally left in the window's code gives you an achievement when pressing W.