4 ›A big dome filled with mainly safespots as the shelves aren't the right kind to be pandemonium detterent. Eyefestation may have a chance of spawning on top of the dome.
4 ›Large room where you usually enter the room with a catwalk that continues with a staircase downstairs leading you to the next door. The corners are Safe Spots except the ones that have the next door and the staircase.
4 ›A basic intersection with the next door usually on the right so the left side is a SS/PSS however you want to use it. The big PSS can be found in images 3 & 4.
4 ›Very common starting room after opening the first door to The Ridge. There's a garunteed PSS, however there's a speaker right by the side room making it pretty risky unless you stick to the very back. There's also a turret mounted on top of a hummer in the middle of the room. Behind the vehicle is a crate which you can also use for a PSS since nodes basically pass the vehicle on its right shown in image 3.