One of four endings to Bioshock 2. Sofia Lamb's bombs detonate and cause a section of Rapture to plummet towards a trench. This wounds Subject Delta mortally but he manages to cling to the escape pod. Eleanor kills her mother by preventing her from breathing.
Eleanor extracts your ADAM, brushing your hand aside, gifting her your terrible nature when she absorbs your consciousness (memories, conscience etc.) The rain pours down and the corpses of Rapture float to the surface while Eleanor smirks at her reflection.
To obtain this ending you should kill every Little Sister. Sofia Lamb's fate changes if you spare all the characters. If you kill one then she will die.