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