Here is the full list of all 31 MADiSON achievements.
Complete the game taking 75 or fewer pictures.
Complete the game taking 40 or fewer pictures.
Unlock every achievement of the game.
Take 500 photos.
Find every red collectible.
Find every collectible in the game.
Finish the game under 2.5 hrs.
Complete the game in hard mode or higher.
Survive through the entire Blue Knees section.
Find every blue collectible.
Complete the mausoleum section under 5 minutes.
Survive through the entire Cathedral section.
Complete the tunnels section under 3 minutes.
Finish the game under 6 hrs.
Complete the game.
Blind Blue Knees five times.
Let Blue Knees kill you.
Make the four virgins cry.
Find Elizabeth's diary lost page.
Play the "Do not listen" tape.
Complete the shelves section under 5 minutes.
Get back to the main house a second time.
Let Hans kill you.
Take 100 photos.
Find a collectible.
Take 50 photos.
Reach Luca's storage limit.
Get back to the main house for the first time.
Break the shovel.
Find the hidden message on the mirror.
Store an item for the very first time.