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.
Experienced all possible scares.
Collected all clues without triggering the repeating rooms.
Finished watching the credits.
Walked through fire.
Solved the password.
Collected the Golden Record.
Took pictures of every interactable moon symbol.
Collected the camera.
Finished one complete playthrough.
Inputted the password without collecting any clues or walking through any doors.
Opened the cryotube door.