Here is the full list of all 14 The Vanishing of Ethan Carter achievements worth 1,000 gamerscore.
Found the sniper rifle
Another story, kid. What else?
Solved the death of Ed
Solved the death of Dale
The Cursed World
Solved the death of Missy
Solved the death of Chad
Wish come true
Discovered the magic behind the potions
Explored the family house
A beast outsmarted
Solved the death of Travis
Survivor's guilt
Walked towards the light