BioShock 2

After u run along the corridor with Eleanor Lamb and the corridor blows up and you grab onto the bathysphere, the achievement should come up regardless the difficulty. There r many ways to get through the game quickly. Have the game set to easy and know what codes have to be entered at doors to gain access without having to seach around. The code needed for Pauper's Drop is 0047. The one needed for Siren's Alley is 1919. The one needed for Inner Persephone is 2673. The game is easy enough if u watch out for Big Daddies, Alpha Series, Brute Splicers, turrets, cameras and perhaps more than one Little Sister(but it depends how u play the game)

This achievement will pop-up as you are watching the ending.