Here is the full list of all 12 The Bottom of the Well achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Finish your first playthrough.
Learn valuable life lessons and get better prepared for the End Times.
Reach the Evacuation Center and follow the music to its source.
Reach the Evacuation Center alive, but fail to enter the Admin Building.
Finish the game and finally wake Alice from her sleep.
Against all odds get Ches and his sister safely to the Evacuation Center.
Defeat the Bitch Queen and her lackeys and gain control over the Fallout Shelter.
Survive the apocalypse by sheltering in the subway.
Find an alternate way across the river - and survive.
Use a car to get out of downtown.
Let someone else take your place.
Explore the many ways you can die during the post-apocalypse.