Full list of all 15 One Step After Fall achievements worth 2,000 gamerscore. It takes around 0-0.5 hours to unlock all of the achievements in the base game.
The base game contains 10 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 5 achievements worth 1,000 Gamerscore.
Find the first letter
Find Cameron's photograph
Find the self help book
Meet the Scarecrow
Find the Chicken Man
Inspect the medicine bottle
Collect the book The Sea of Thieves
Achieve the False Ending
Achieve the Real Ending
Scare the crows
Inspect Tera Solutions polaroid paper pack
Get the book Green Lights Under the Sky
Get the book Carol's Depression
Inspect a bottle of wine