Guide to Levels 9,10,11 and 12 of Bioshock for the PC

Grab the pick ups in the Metro and head up the stairs and through the door. Atlas wants you to go after Ryan, follow the arrow as directed and part of the way along the glass tunnel. Where it opens out, you’ll bump into a couple of Splicers.

Take the right passage and enter the next door towards Ryan’s office. Go through the corridor and into the next room to take out a Splicer on your right.

Go up the stairs on the left and hack a turret to your right. In the left corner, you’ll find an audio log next to the Circus of Values machine. Grab the nearby pickups and follow the arrow up the corridor.

Keep following the signs for Ryan’s office. Grab the pick ups along the way, including an audio log by the Vita Chamber and the grenade launcher in the table in the middle of this room. Go up the stairs and take out the security camera above the next door.

Head through the door and turn left into a long corridor with corpses hanging on either side. Search the area and the corpses for pick ups. One of the corpses has an audio log which will instruct you. Go past the statue of Ryan and pull the circuit breaker lever. When you do quickly turn around and watch the door on the left as Splicers break their way through, take them out and go through the door. Go through the water past a Big Daddy corpse and enter the Hephaestus Core.

Take the door on the left and you’ll see a Big Daddy and Little Sister. Let him kill the Splicer and then waste him and decide what to do with the leftover Little Sister. Grab an audio log from beside the Vita Chamber and then destroy the security camera below, which you can see from the railing opposite the Vita Chamber.

Head down the stairs and mop up the pick ups and use the stations if you want to, there are a few Splicers dotted around. When you are ready follow the arrow and enter the Heat Loss Monitoring room.

As you enter the machinery room the lights will flicker and go off.

Towards the end of the room you’ll see some Splicers pretending to be corpses. Head through the next door and turn right, take out the Big Daddy when you see him and save the Little Sister. There are various pick ups in the room, including some hidden under the stairs, watch out for more Splicers playing dead.

Follow the arrow down some stairs and grab the audio log and tonic off the desk on your left when you reach the bottom. Go back up the stairs and walk up to the electrified water.

If you walk along the left platform, a ghost scene will play. Make sure you hack the control panel on the left to turn off the electricity before entering the water to collect more pick ups. When you are done follow the arrow back to the Hephaestus Core and take the stairs to the right and go through the door to the Workshops.