When we regain control of Isaac, enter the hall nearby and use the save station (ss47). Follow the hallway past the unlocked door and when you reach the T-intersection, turn left, here you will find a power node (41) on the wall. Return and enter the door. Follow the balcony around here and approach the blue panel facing the window.
Following the scene continue along the balcony and use the save station (ss48) here and the shop if you need to (and I would suggest stocking up on stasis packs), then take the elevator here down to the next level.
This large area is below where we started the level and the drill machine is burning here at the back of the room. As we enter, we will see a few necromorphs running towards the door up the stairs at the far end of the room from the drilling machine. Looking directly across the room from where we enter, you will see another side room containing a power node (41). We'll come back for this later when it's a bit more peaceful.
Run up to the door at the top of the stairs and kill the super-slasher and the spitter here. In doing this, you will trigger another wave of baddies to come pouring into the room. Keep the door at your back and eliminate the hostiles as they come up the stairs, feel free to use stasis liberally and plant detonator mines if you get the chance. You will need to face and dismember another 3 spitters, two super-lurkers, two exploders and a pair of super-slashers. If things get a little crowded use your stasis and don't be afraid to whip out your detonator, or force gun to deal some splash damage.
Once the lot of them have been killed, watch out for another pair of super-lurkers who sneak into the room and go and pick up the power node (42) as discussed earlier. Hack the panel to the left of the large door.
Continue through the next room and down the stairs. As you reach the bottom, some bright lights will come on and a collection of soldiers will open fire on you with machine guns. Quickly run into the door on the right. Grab the power node off the sink to your left and continue out the other side of the room, climb through the vent here.
Exit the vent and climb the stairs, use the save station (ss49) here if you wish, and then look in the alcove to the right. Pull the panel off the wall with kinesis and then remove the power core, watch the carnage unfold below. Once the door nearby becomes unlocked, return through it and down the stairs. Through the window here you will see a number of necros waiting for you in the next room including spitters and a slasher or two. Pick up the stasis canister here enter the door and let them have it. Take them all out before proceeding through the door behind the security scanner.
After a short scene, our suit locator will be active again, and the doors opposite the entry way will unlock, cruise on through either of these. Pick up the body on the ground here and carry it over to the scanner at the far end of the room to unlock the doors. Enter the right hand door and follow the passage around. As the passage empties into a larger room, look directly across from your position to find an audio log (Log 38 - Patient Four). Continue down the ramp, past the yellow energy pillars and past the save station (ss50) to the right, pick up the ammo here and turn around to kill a slasher and a spitter who appear. Continue onwards to the next door.
As you open the door, you will see an infector fly past, try to kill it as quickly as possible, and then retreat through the door to the previous room.There are a large number of angry necromorphs in here and by retreating it will give you a few extra seconds to unload ammo into them whilst they come at you.You will need to take down 2-3 super-slashers, a similar number of regular slashers, an exploder and a couple of spitters. They will come at you from thefar right corner of the room and will also drop out of a vent in the ceiling just to the left of the door.
Once they have stopped coming head inside and use your locator to find your way through the desks here. To the left of the next unlocked door is a work station, have a look behind it to find an audio log (Log 39 - Shield Questions). Continue through the door.
When entering the next room, directly across from your position is a bench and to the left of it is a store room that requires a power node to enter (if you do enter it, watch out for the divider who appears after you leave). Exit via the unlocked door to continue.
You will find yourself in an open room with crates scattered everywhere and a necromorph growth on the floor which will slow down your walking speed. Runover to the wall opposite the door and pick up the power node (43) from the wall cabinet. Whilst hugging the wall move forward into the room until you see the stalkers, retreat a bit and hang out in the corner where you just picked up the power node, plant a few mines to your left and your right with the detonator and wait for the stalkers to come to you. After you have killed three of them, a spitter will burst out of a vent in front of you in the distance, deal with it and then kill the remaining stalkers.
Once they have stopped coming, return to the entrance and kill the spitter now sitting in the middle of the room. Afterwards, look up at the ceiling to find a power core. Look against the left wall near the power core to find an audio log (Log 40 - Same Signal). Use your kinesis to bring down the core and carry it over to the exit. Remove the faulty power core and replace it with the new one to unlock the door. Mosey on through.
There is a save station (ss51) in the next room, watch out for cysts if you wish to use it. Follow the ramp down and enter a room with spinning lasers.This area can be tough as if the lasers hit you, its game over, however we still need to make a dash across the room three times to get where we need to go - stasis will not work on the lasers so just remember to sprint!
Move forward to the entrance to the spinning laser tube and kill the crawlers and the legless spitter occupying the middle of the room. Look to your right and you will see a similar doorway to where you are currently. When you see the laser go past immediately sprint for the doorway and continue to run to the back of the room, turn around and use stasis on the super-slasher who just jumped out of the vent behind you. Kill it and do the same for the legless spitter that crawls in the doorway after you. Grab the power node (44) from the wall.
Again move to the door we just entered and look to the right, you should again see another opening. Like the previous instance, wait for the laser to pas sbefore legging it over to the next side room. From the entrance, eliminate the crawlers that spawn and then once more look to the right for the next doorway. Sprint over here and kill the two slashers and the legless spitter that appear. Take the elevator located here up to the next level.
Follow the balcony to the right until you reach a blue control panel. Use this to turn off the lasers below. When they stop spinning, use your kinesis to lower the object in front of you to create a bridge to the centre of the room, again from here use kinesis to lower the object here to continue over to the opposite balcony. If you check out the ammo and crates to the left, on your way back to the door you will be ambushed by a slasher and a super-slasher.
Enter the unlocked door. And follow the hallway until you reach a circular room with a small raised area in the centre. Look to the right and at the bottom of the raised area for an audio log (Log 41 - Marker Success!). Use the save station (ss52) here if you wish and then continue through the next door.
We are now on the top floor of a three tiered room. Move to the left and chill in the corner. A tonne of baddies will come your way in the form of a crawler or two, 3-4 super-spitters, 2-3 super-slashers, an exploder and two regular spitters. As per usual, mines and stasis are a good way to protect yourself if your main fire arms can't keep up. Once the baddies stop coming, move forward a little bit and kill the two necromorphs that appear. Enter the door and go down the ramp, eliminating the super-spitter and the slasher at the bottom. Continue through the door to the second tier of the room we were in just before.
As with the previous floor, head over to the left hand corner of the room. Eliminate the slasher and the exploder that appear on the other side, then the super-slasher that appears in front of you and the super-spitter who appears where the exploder came from. After killing another super-spitter, super-slasher and a regular slasher, move towards the next door slightly and kill the extra two slashers that appear. Enter the door and continue down the ramp to the ground floor of the three-tiered room.
As you enter, look to the right for an audio log (Log 42 - Tiny marker). Turn to the left and walk towards the large red door here. As you approach it, look behind you to see a brute drop down to attack. As with the previous encounters, simply use stasis on the brute to the max and it is harmless - heck there is even a stasis canister next to the door you can use to make it easier. Once its legs have been removed and it's not bothering you any more, return to the door and hack the panel nearby to unlock it.
Continue through the next set of doors through the hallways and across the bridge until you reach the next room. This room contains an upgrade bench, a save station (ss53) and a store. Go to the store and look on the yellow counter to the right of it to find a text log (Log 43 - Dire) and to the left of it for an audio log (Log 44 - It's Making Us Make It!) hidden behind the helmet on the bench. Return to the save station and enter the elevator.
After the cut-scene, enter the door to the right and use the panel in front of the cylindrical machine in the centre of the room. Isaac will climb into the machine.
Use the control to direct the laser down into Isaac's eye, you need to do this do VERY slowly as his eyes will dart all over the place suddenly and without warning. You will need to lower the needle into his eye when the laser is blue or he will die.
Note: After completing this, you will earn the achievement/trophy'Cross your heart, hope to die'.
