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