When you need to find Marshall, take the elevator to the Research Sector. Leave the elevator and head into Central Research, where a plethora of enemies will spawn around you and down the stairs. Take all of these out and head toward the glowing red area, where you'll need to shoot and destroy a few pulsing weak spots to reveal the doorway to Parapsychology.
Your path will be obstructed, so take a left toward Parakinesiology instead. When you go through the next doorway, be prepared to fight because a bunch of enemies will spawn in the small room, including a few snipers. Stay in cover when you see them aiming at you, then pop a few shots off straight after they fire.
Through the next door will be another Control Point to claim, followed by a room with another video from Dr Darling. Keep going and push the big red button to open the door to the side of the trapped Astral Entity.
Now you're inside the room with the Astral Entity. Your goal is to trap it inside the room with the huge door, and to do that, you need to find the two power blocks. One is in the open, while the other is hidden behind some wooden panels near the door you enter from (pictured above). Insert them both either side of the huge door, then lure it inside, stun it with Launch, and shut the door from the other side.
Next up is another room full of enemies. As you kill them and make your way to the other side of the room, a huge juggernaut-esque enemy will spawn, but he's easy to take out as long as you utilise Launch and fling grenades back at him. Afterwards, cleanse the Control Point and interact with the intercom down the stairs by the elevator to speak with Marshall.
She'll send the elevator for you, but not before some more Hiss enemies turn up to spoil your day. Take cover behind the planter and deal with them, then hop in the elevator. At the top, you'll be greeted by some friendly faces - or masks - with another control point at the end. Go through the Luck & Probability door to find Marshall.
Find Darling's HRA Lab
Find Darling's HRA Lab/Parakinesiology Chief Lewis boss fight
Leave through the now-open door and you'll stumble upon some Rangers fighting the Hiss. Take them all out and push forward to the Control Point, then when you cleanse it, you'll have another boss to take on: Parakinesiology Chief Lewis.
He doesn't put up much of a fight, but he does have a shield he can use, just like yours if you've completed A Good Defense. Use your Launch ability to fling debris at him and take down his shield, followed by more debris to deal damage. Aim for headshots whenever he's vulnerable and watch out for the smaller enemies, otherwise this should be a walk in the park.
Cube puzzle HRA Lab
Cube puzzle HRA Lab
Continue heading forward into Protective Studies, then take a left toward the area marked on your map. At the end of the corridor, go left and interact with the terminal. You're faced with a brand new puzzle.
To complete it, you need to match the pattern seen on the paper to the left. Here are the correct button presses in order:
Right, Up, Up, Left, Left
The enormous door to the lab should open and you can head inside.
Activate the HRA Machine
Activate the HRA Machine
Interact with the machine and Marshall will show up again, instructing you to restart the punchcard terminals. To do this puzzle, you need to first pick up the five punchcards littered about the place. Each terminal has a number painted on the side. Use the image below to insert them in the correct order:
When you put the final punchcard in, you'll be booted out of the terminal so you can interact with the HRA Machine again. Speak to Marshall and get the keycard off her which will kick off the next chapter: Threshold.
A Captive Audience
A Captive Audience (Seize ability)
Fast travel back to Parapsychology, then follow the signs for the Hypnosis Lab. The room is full of hypnotised friendly Rangers, and you need to reach the X-Ray Lightbox. Use the terminal in the room on the right and you'll be presented with another cube puzzle. The solution is stuck to the window in the background, or you can press these buttons in order to solve it:
Left, Down, Right, Up, Up, Up, Left, Down, Right
Now the door will be open and you can access the Object of Power. Interact with it to teleport to another tutorial section, this time to learn Seize. Complete this and return to the FBC to start the next chapter.
Control walkthrough: Welcome to the Oldest House
Control walkthrough: Unknown Caller
Control walkthrough: Directorial Override
Control walkthrough: Threshold
Control walkthrough: My Brother's Keeper
Control walkthrough: The Face of the Enemy
Control walkthrough: Finnish Tango
Control walkthrough: Polaris
Control walkthrough: Take Control
Control walkthrough: Old Friends
Control walkthrough: Fridge Duty
Control walkthrough: Self-Reflection
Control walkthrough: Mr Tommasi
Control walkthrough: Old Growth
Control walkthrough: A Matter of Time
Control walkthrough: Langston's Runaways
Control walkthrough: The Enemy Within
Control walkthrough: Mold Removal
Control walkthrough: What a Mess (all missions)