Welcome to the Oldest House (2)

After the intro sequence, go through the body scanners to your right. Look on top of the X-Ray machine for the collectible, Prohibited Items Reminder.

Head upstairs and through the door on the left. Examine the green folder on the desk. Turn around and look on top of the filing cabinet for the collectible, Bureau Expenditures.

Back out in the hallway, run to the end and turn right. Make your way to the open office at the end. Look on the corner desk for the collectible, Security Order.

Leave this office and turn left. Duck into another office on your left where you will find the collectible, R4 Reports Reminder, on a table.

Continue until you meet Ahti, who directs you to an elevator. Ignore the cupboard to the left of Ahti and continue to the red-carpeted corridor. Ignore the elevator for now and go to the stairs, then go down. You will be back in the main lobby where you can access a new office. Look on a sideboard for the collectible, Visitor Evaluations.

Retrace your steps, use the lift, and follow signs to the Director's Office. Go into the Security Room on the left to find the collectible, Approved Terminology Reminder, on top of a filing cabinet. The level 1 door across the way cannot be opened yet.

Continue forwards, ignoring the two open offices on either side. When the area opens up, look on a filing cabinet to your left for the collectible, Trench: Do Not Disturb.

Go through the double doors at the end to find the director. Pick up the gun for a scene, after which you will find yourself on the Astral Plane.

Head forward, drop down, and leap across a gap. Clamber up to the next platform. Run up to the enemy and use a melee attack to destroy it. Look up to see the Service Weapon hovering above a platform. Climb up and grab it, unlocking the Choose to be Chosen trophy.

Go forward and shoot the two enemies below. Drop down and fight off several more enemies, two of whom are armed. Destroyed enemies leave behind blue Health Elements (which restore your health) on the floor. When they are all taken care of, use the white rope to return to the material world.

Leave the Director's Office for another scene. You will have to kill three Hiss Guards. You will acquire several new collectibles: Director Trench Photograph, Service Weapon, and Objects of Power. Killing the enemies will also give you your first piece of Hiss Research, Hiss Guards. Approach the area where you killed the guards to acquire 300 Source.

Follow the red carpet left and then right again towards Executive Affairs. When you reach the sign directing you to Central Executive, engage in a firefight against several waves of guards. Use cover (a defensive position behind an object) to ensure you're not caught in crossfire and take them out with your gun.

From the sign, go right. Ignore the first door on your right (a toilet) and go into the next office along where you'll find the collectible, Executive Meeting Minutes, among papers on the floor.

Continue to a meeting room and find the tape recorder with the collectible, FBC Reminder: Building Shifts.

Go past the Central Executive sign and turn right into the open office area. Go to the end to find the collectible, Dinner Reservations, on a filing cabinet.

Backtrack a short way to find the door to a Shelter. Open it and go inside. On the toilet cistern is the collectible, Marshall: AWE Investigations. There is also a loot container.

Leave the room and continue towards Central Executive. Go through the doors. Look in the office on the right to find the collectible, Urban Legends, on top of a cupboard. The left-hand office has a radio you can turn on.

Head forward to the landing overlooking the red room. If you shoot one of the figures dangling from the ceiling, you can fight some of the enemies below from up here. They will throw grenades at you; backtrack quickly if that happens. When there are no enemies left, jump down. You will face a standard grunt and a Hiss Ranger.