Investigate the central reactor | Walkthrough Alien: Isolation Guide
Last update: 11 May 2016
Access Rewire � Deactivate the motion sensor
Ventilation shaft � Go unnoticed around the androids
Ion cutter � Take the ion cutter from the table
Activate the switch
Transmitter � Turn the power on
Switch � Activate the lift
Ventilation shaft � Use the vent in the floor
Boltgun � Take the boltgun from the table
Ladder � Take the shotgun and revolver, then climb down the ladder
Elevator I � Use the elevator to get to the central reactor
Elevator II � Use the elevator to get to the reactor
Elevator III � Descend to base of reactor
Exit Apollo and wait for the doors to shut. This will open a door to a ladder leading beneath the Apollo core.
Once you climb down, approach an elevator and go to the engineering.
Follow the corridor to the other end, and turn power on, then go back to central part of the location, in order to turn on the tram system, which will open the door.
Go through the door. On the far end of the corridor there is an android and a motion detector. In order to avoid both dangers, enter the vent shaft on the right.
This will take you to the room with a rewire system on the wall. Turn off the camera, and move on while sneaking.
At the end of the room, you will find a vent shaft, and a map update console on the right.
As soon as you exit the vent shaft, you will notice more motion detectors. Stick to the left wall, and enter the room on the left. On a work-bench, there is an upgrade to the plasma torch (ion torch).
Exit the workshop through the same door you entered, walk past the motion detectors (the best way to do that is by moving to the right side and walking under the camera). At the end of this corridor, you will find a locked vent shaft. Use the ion torch to unlock it, and move on.
Once you leave the shaft, save the game and enter the next room. In this room, there is an android roaming around - you can either kill or sneak past him. Regardless of your choice, go to the right side of the hall, and you will find the first transmitter. The second switch is on the other side of the room, on the left (right next to the door). Go to the left side of the hall in order to turn on the third one.
As soon as you activate the third transmitter, head to the left, and you will find a generator by the door.
The obstacle blocking the vent shaft will be removed. At the end of that, you will find a ladder leading to the upper level. Go through the first door, and you will see another one locked. Turn right in order to take the long way.
In the first room, there is an android waiting for you. Sneak past to the next room, and on the table you will find a bolt gun - with that you can easily kill the android. Before leaving the room, enter the terminal and unlock the door with a keycode (the keycode is in one of the messages, 6832).
Exit the room, and turn right. The door are unlocked, so follow the corridor to an elevator.
In this room you will find bolt gun ammo and an Archive Log. Move on, and by a ladder there are more weapons - a revolver and a shotgun. Once you go up, save the game and follow the corridor to a door. Then use the elevator that will take you the lower level of the reactor.
Take out the bolt gun, stand by the door, and eliminate incoming androids. Wait until the gun is fully charged, then shoot them in the head, in order to quickly eliminate them.
No matter which route you take, you will get to the same location. Go through the door, and then activate the elevator.