Head through the newly opened door and you will emerge at the top of the stairs where you originally found the machine gun. Grab the trap rivet ammo and head upstairs. Just the other side of the door, take a right into the women's restroom to find audio log 3/100 - To My Daughter, on a bench against the right wall. After the ensuing sequence, follow the only available path to a room with a Vita-Chamber. Back in the pool room, give the generator a zap to fire it up and allow you to go through the large door on the other side of the pool.
Afterward, fight off a lot of splicers but don't board the train just yet. Add this game to my: Favorites. BlackBerry iOS (iPhone/iPad) Macintosh PC PlayStation 3 Macintosh Nintendo Switch PC PlayStation 4 PlayStation 4 Xbox One. Enter the train car and hit the start switch to end this level. Locate the El Ammo Bandito machine just to the right and hack it (Prolific Hacker 6/8).
Now Playing. In the small room beyond pick up audio log 2/100 - Fitness. Stuff like that is what was missing from Bioshock 2; mysterious questions unanswered until the last moment, and then a flying knee to the face with a plot twist! When he stops moving, approach the Little Sister and pick her up to unlock: Adopt a new Little Sister for the first time.
After the opening cut scene, head upstairs and into the pool room. Do not try for the no damage achievement here. Just to the left of the safe be sure to nab audio log 18/100 - Cutting Corners in a crate on the floor in the corner. Exit the train and enter the small control room straight ahead to get your new goal. There will be a much better place later on, and you will have much better equipment and abilities by then. Just past this display, and before going down the stairs, be sure to pick up the machine gun weapon. After the cut scene, just follow the only possible path until you come to the airlock.
After going downstairs, make your way through the wreckage and turn left before getting to the Journey to the Surface door.
There are three main endings (a good ending, a neutral ending, and a bad ending) along with two possible variations of each. Questions. You can deal with only one little sister or all of them to affect your ending. Make sure you use the door with the sign above it, rather than the door with the sign to the left of it.
Search the area for numerous goodies and then follow Big Sister out of the room. Now, would you kindly start playing this game?