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