Full list of all 54 Sunless Sea achievements.
The base game contains 30 achievements, and there is 1 DLC pack containing 24 achievements.
Send your child to zee
Complete the game without saving manually
Die 10 times in an unbroken lineage
Take the Pupil legacy
Take the Shipmate legacy
Spend one year out at zee in an unbroken lineage
Visit the Surface
Discover The Dawn Machine
Achieve Antiquarian 10
Achieve Admiralty's Favour 10
See Hunter's Keep burn
Create an ironclad will
Die 5 times in an unbroken lineage
Take the Correspondent legacy
Let your terror reach 100
Let your terror reach 90
Take the Salvager legacy
Download new stories
Suffer Salt's Curse
Take the Rival legacy
Die for the first time
Woo a sweetheart in London
Spend five years out at zee in an unbroken lineage
Spend ten years out at zee in an unbroken lineage
Acquire the Eschatologue-class Dreadnaught
Discover 'The Eye'
Suffer Stone's Curse
Suffer Storm's Curse
Recruit the imaginary officer
Complete the game without ever choosing a past
Discover Aigul
Discover Dahut
Accept a power of the deep zee
Escape underwater combat by resurfacing
Discover The Gant Pole
Discover Wrack
Discover Nook
Use an oasis to increase your oxygen levels
Discover Rosegate
Discover Scrimshander
Discover Anthe
Discover Low Barnet
Discover Hideaway
Discover Undercrow
Use underwater currents to bear you on your way
Venture beneath the waves
Die of suffocation
Be killed by an underwater creature
Be killed by the Constant Companion
Come face to face with the Constant Companion
Avoid being killed by the Unexploded Unclear Bomb
Perform an abyssal ritual to encounter Lady Black
Complete the Zubmariner ambition
Collect all of Drownie Love-song, Drownie Counterpoint and Drownie Hymn