Here is the full list of all 23 Awaiting Salvation achievements.
Read all notes
Find the mask
Investigate a dead body
Collect all keys
Get an antique coin
Get the gear wheel
Collect all cures
Achieve the King's order
Repair the bridge
Explore the village
Use the mask at the Oldman's house
Use the mask at the tavern
Explore the sculpture area
Explore the doctor's lab
Find the hidden channel
Solve the light-game
Solve the doctor's puzzle
Burn the fireplace
Open the shelter's door