Here is the full list of all 9 Estranged: Act I achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Take John's bucket to the end of the game.
Rudely interrupt the evening news.
Finish the game.
Finish the game without picking up the flashlight.
Empty all vending machines.
Watch the video of the cat.
Score 15 or more points in the shooting gallery.
Don't escape the chair.
Turn off the lamp in Redton Nature Reserve.