Find a small hole and jump inside, then swim through the flooded tunnel.
Thanks to this, you will reach the door to the sewers.
Right after you walk into the sewers, find the broken part of the flooring.
Jump into the water and reach the other end of the underwater tunnel.
Enter the big hole here and follow the path of flares.
Reach Michael here and talk to him.
You will learn that you should probably plant explosives in four different parts of the building.
Collect fourremotely controlled Explosiveson the nearby shelf and launch the red door to start your exploration of the skyscraper.
First, you gotta reach floor 10 so, climb up the stairs.
After you get to the first floor, find the elevator and set it into motion.
Unfortunately, the elevator stops before floor 10, halfway up the shaft.
After it does, jump towards the manhole and climb onto the roof.
you oughta turn around to locate the ledges above.
Finally, jump towards the opened door on floor 9.
Start exploring this floor and especially note the ceilings of the individual rooms.
On floor 10, you better reach apartments 105 and 106.
In each of the apartments, find the cooker and interact with it to plant a bomb.
After you plant both, find a new staircase.
Climb up the stairs to floor 12 and watch out for the bomber and the infected around.
Jump to reach the ledge above and climb to floor 13.
On floor 13, check out apartments 134 and 137.
In apartment 134, you find a new jot down of infected-children, called screamers.
Use Molotovs to your aid and eliminate the incoming monsters.
Watch out for the toad, among others, who should appear on this floor.
After you have secured the area, approach apartment 134 again.
you might try killing screamers, e.g.
with guns, but it is better to follow the game’s suggestion.
After you have cleared apartment 134, find the cooker and plant the third explosive.
Walk over to apartment 137, where you do not find any new surprises.
it’s crucial that you reach the elevator and slide the wings of the door apart.
Jump towards the ropes in the shaft and abseil to the very bottom.
Jump into the elevator, press the button to start it and wait until you get to another floor.
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