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