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