Use the manhole and fast travel to brick lane markets. We will now be able to easily access brick lane flats, due to our gear and upgrades.
Just follow your marker to that point.
Dropping Into the Hole
I was a little stuck here, but its nothing to bad. Look for ladders don't worry about the C4 debris for now.
Make your way along the planks. Keep your cool with the zombies. Until you reach the entrance where you must drop down. Here you will find the double barrell shotgun.
Go through the next door and down the flight of steps and see the safehouse logo. Eventually making your way to another manhole, giving us further fast travel access.
Make preparations and continue with the marker. You will reach a basement. Take out the Zombies and ride the elevator up to Ron Freedman's flat.
Ron was having a little party. Notice a door with a strange blue hue. That is where we must go next. Explore options and go through all the other doors. One will lead to the back way into the blue room which is barred.
So basically don't worry about the blue room from this side, look for an alternate entrance. Look for a ventilation shaft. Inside will lead you to the alternate entrance to the disco ball !
Crash the party with a grenade and a few cocktails. Then make it to the ventilation Shaft.
Ron's Flat Code key
Deal with the zombies first. Notice the safe, look for the key code which is on the desk near the lamp. Scan it with your prepper pad to illuminate the area. Input the code, which may differ or possibly be random for everyone that plays the game.
Be quick or die. Inside the safe is the document or quest item, grab it.
Down the Chute
Make your way through the ventilation shaft and you will reach an area with a bunch of warehouse equipment. Look for the CCTV junction box here, you will thank me later.
Continue following your marker until you reach the laundry shaft or chute.
BAM ! make your way back to the doctor give him the document and then pick up the letters of dee quest, which is irrelevant for now. Just head back to the safe house via man hole.