Sector 01: The Lip
The Lip is the only part of Nyx that looks like a place built for people. It has a bar, a med bay and a window that faces the collapse. New crews start here. Veterans leave their names on the wall.
The first extraction window opens on the Lip. It is also the most predictable window, which makes it the most dangerous.
Sector 02: The Fold
The Fold is the ring's interior, a stack of corridors that share the same coordinates. Two people can walk the same route and arrive in different rooms. The map is not wrong; it is just not finished.
Use sound. Use chalk. Do not trust the compass after the second inversion.
If the corridor repeats, you are not lost. You are early.
Sector 03: Cinder
Cinder is heat, rust and a foundry that has been dying for forty years. The floor vents open on a cycle. Learn the cycle or learn to fall.
The second window opens above the crucible. It is a long extract, but the only one that does not pass through the Fold.
Sector 04: Null
Null has no skybox. It has no extraction window. It has a door, and the door is always open.
If you find yourself in Null, you are already in the third window. The only question is whether you brought a crew.
