Here is the full list of all 7 Suspicious Downpour achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Witness Mr. Wilson and all of his glory.
Throw the maximum amount of sandwiches.
Click the flashlight like your life depends on it.
Learn the new and improved sandwich recipe.
Embrace the sweet warmth of your bed.
Be witnessed by everyone in the family at once.
Gaze upon on where you thought you'd be visiting.