# of Audio Diaries: 15
# of weapon upgrade stations: 2
# of Little Sisters: 3
New weapon types: Crossbow
Hypnotize Big Daddy II (for saving 9 girls)
Extra Nutrition II
Incinerate! II (for sale)
Winter Blast II (for sale)
Insect Swarm II
Medical Expert II
Hacking Expert II (for sale)
Booze Hound (U-Invent)
Hacker's Delight II (U-Invent)
01 - Go towards the bathysphere station. There's a fortune teller in here, and a slot machine - you can have fun with them.
02 - When you reach the station, the bathysphere will be blocked by Sander Cohen. Go back to the main corridor and defeat all the Spider Splicers he sends at you. When you're done, head south.
03 - Wait for Cohen to finish speaking, then head south to Le Marquis D'Epoque.
04 - Look around this area. There are 3 diaries here and Power to the People station.
AUDIO DIARY: [Come to the Record Store] - Cobb
AUDIO DIARY: [The Wild Bunny] - Sander Cohen
AUDIO DIARY: [Artist's Feud] - Sullivan
05 - Here's the weapon upgrade station, as well as another diary.
AUDIO DIARY: [Fancy Cigarettes] - Milonakis
06 - Go back to the main hall and go up the stairs [A]. Grab an audio diary and check out the Gatherer's Garden. There are a few new things to be bought: Hacking Expert 2, Incinerate 2, Winter Blast 2, Insect Swarm 2.
AUDIO DIARY: [Stood Up Again] - Diane McClintock
07 - It's a gallery of Cohen's twisted artworks. Grab an audio diary and take some ammo from the three safes in here.
AUDIO DIARY: [The Doubters] - Sander Cohen
08 - Fleet Hall. Go up the stairs to get to the storage. Take an audio diary. You can't enter the projector room, so go back down. Press the elevator button and ride up.
AUDIO DIARY: [Musical Insult] - Sander Cohen
09 - When the piano blows up, take a photo of Fitzpatrick's body. Before you head back to the Atrium, take another engineering tonic: Alarm Expert. It's on the balcony in the southern part of the theater. In order to get to it, you have to jump from the balcony next to it.
10 - Here you will see Cohen's "masterpiece". Place Fitzpatrick's photo on it and you'll get a crossbow as a reward.
11 - The Frozen Tunnel. Take an audio diary and go further to meet Finnegan.
AUDIO DIARY: [The Iceman Cometh] - Finnegan
12 - You'll be frozen for a while now. When you regain your ability to move, find Finnegan and kill him (a single headshot from a crossbow sees the job done). Take his body's photo (also search it for a Frozen Field tonic) and take it back to the masterpiece. This time you will get some ammo. Look around for a Little Sister if you hear Big Daddy's steps somewhere.
13 - Go to Poseidon's Plaza. To get through the frozen tunnel, just use Incinerate on the ice that blocks your way. There should be another Little Sister wandering there.
14 - Sinclair's Spirits. Press the button behind the bar to open the door. Enter the cellar for a Power to the People station.
15 - Go down the stairs [G] (they are closed unless you press the button from point ). You'll find another tonic: Extra Nutrition 2.
16 - Go up the stairs [D] and enter Rapture Records. There's an audio diary behind the counter. Drop down from the ledge. You'll see Cobb running away. Defeat all the Spider Splicers and then go through the small vent to get back up. Kill Cobb using your trustworthy crossbow. Remember to photograph his body.
AUDIO DIARY: [Ryan's Stableboy] - Culpepper
Take the photo back to the masterpiece. This time Cohen will loose his temper for some reason and send a group of Splicers on you. Defeat them to get your reward and a last quest from this mad artist.
17 - Pharaoh's Fortune Casino. There's an audio diary here.
AUDIO DIARY: [Bomb Culpepper?] - Sullivan
18 - Sir Prize. Another audio diary on the lower level.
AUDIO DIARY: [Fontaine's Army] - McDonagh
19 -Robertson's Tobacco shop. Another audio diary and a code-protected door (7774).
AUDIO DIARY: [Guns Blazing] - McDonagh
20 - Eve's Garden. After seeing the ghost go behind the stage.
AUDIO DIARY: [Pregnancy] - Jasmine Jolene
When you're going back to the bar, you'll see Rodriguez in there. He'll start running as soon as he sees you, so chase him with your crossbow equipped, waiting for a good moment to take him down. As always, take a snapshot of his body and take it back to Sander's piece of art. Before you go back, though, check out Eve's Garden again - there will be another audio diary.
AUDIO DIARY: [It's All a Grift] - Rodriguez
When you're back to Cohen's domain, he will finally appear in person before you. You can now either kill him and take his muse (a chest containing a few pretty worthless items), or keep him alive to deal with him later (it's a lot better, trust us on this). Your reward for helping Cohen will be Medical Expert 2.
HINT: Before you leave this level, once again go up the stairs [C]. This time you can enter the projector room to grab an audio diary and a tonic: Electric Flesh.
AUDIO DIARY: [Requiem for Andrew Ryan] - Sander Cohen.
21 - Once you're ready, head to the Bathysphere Station and go to Hephaestus. Remember to look for the third Little Sister if you haven't come across her already (you can always find a Big Daddy and wait for him to summon her).