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