Here is the full list of all 11 We Went Back achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Inputted the password without collecting any clues or walking through any doors.
Experienced all possible scares.
Finished watching the credits.
Finished one complete playthrough.
Walked through fire.
Solved the password.
Collected the Golden Record.
Collected all clues without triggering the repeating rooms.
Took pictures of every interactable moon symbol.
Collected the camera.
Opened the cryotube door.