Here is the full list of all 10 Gone Home achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Turn on every faucet in the house at once.
Guess the combination to Oscar's safe before finding the code.
Open the secret bookshelf in the guest room from the outside.
Returned Christmas Duck to his rightful place.
Activated all Commentary Nodes with the Developer Commentary Modifier enabled.
Completed the game having found all 23 of Sam's journal entries.
Completed the game having found all 24 journal entries, with no Modifiers enabled, in less than 10 minutes.
Found Mitten's secret diary.
Completed the game in less than 1 minute with no Modifiers enabled.
Completed the game.