In this level you go to the bottom of Rapture, To find your Daughter. When you get there you see all the junk and waste of rapture. there are many corpses and turrets around in here because splicers call this " Home" Because of all the resources. Tons of Mutants and splicers are out to kill you. You get to the Final room you get a Message from Devench that your Little sister is in the room. You Kill off the splicers and rescue her. She starts to remember everything. Then you get A Message from Devench Stating that he is ready to Leave Rapture. Then a message from Water Being stating that she will bring rapture down. You then get in a Bulkhead and head to Hades Pit. The Final Level.