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