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