Here is the full list of all 30 The Dark Pictures Anthology: Man of Medan achievements.
Only the women survived!
Everybody survived!
Unlocked Conrad's Humorous Trait
Found all Secrets!
Found all of the black framed Pictures
Found all Pictures
Maxed Conrad and Fliss's Relationship
Finished Movie Night
Chose all of the Head decisions
Found all of the white framed Pictures
Unlocked Fliss's Arrogant Trait
Only the men survived!
Calmed Junior down
Finished the Shared Story
Conrad successfully escaped on the speedboat
Unlocked Julia's Spoilt Trait
Maxed Brad and Alex's Relationship
No-one survived!
Completed the Solo Story
Chose all of the Heart decisions
Completed 10 QTEs in succession
Maxed Alex and Julia's Relationship
Revealed the name of the ship
Found 25 Secrets!
Unlocked Alex's Aggressive Trait
Opened the window without making noise
Julia accepted Alex's proposal
Conrad successfully flirted with Fliss
Unlocked Brad's Envious Trait
Beat the Training Dummy