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
Suffer Stone's Curse
Die 10 times in an unbroken lineage
Die 5 times in an unbroken lineage
Take the Correspondent legacy
Take the Rival legacy
Take the Shipmate legacy
Die for the first time
Complete the game without ever choosing a past
Suffer Storm's Curse
Recruit the imaginary officer
Discover 'The Eye'
Suffer Salt's Curse
Take the Pupil legacy
Take the Salvager legacy
Complete the game without saving manually
Achieve Antiquarian 10
Create an ironclad will
Acquire the Eschatologue-class Dreadnaught
Let your terror reach 100
Let your terror reach 90
Send your child to zee
Discover The Dawn Machine
Visit the Surface
Woo a sweetheart in London
See Hunter's Keep burn
Achieve Admiralty's Favour 10
Spend one year out at zee in an unbroken lineage
Spend five years out at zee in an unbroken lineage
Download new stories
Complete the Zubmariner ambition
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
Be killed by the Constant Companion
Come face to face with the Constant Companion
Discover Anthe
Discover Undercrow
Discover Nook
Discover Low Barnet
Discover Wrack
Discover Scrimshander
Discover Hideaway
Discover Dahut
Discover The Gant Pole
Be killed by an underwater creature
Discover Aigul
Accept a power of the deep zee
Use an oasis to increase your oxygen levels
Die of suffocation
Escape underwater combat by resurfacing
Venture beneath the waves
Use underwater currents to bear you on your way