The Rotting Metropolis/Gate Map

First Floor:

Name: Mission Lobby
Depth: 0
Level Link: This mission's lobby is standard.

Second Floor:

, 
Name: Streets of Decay
Depth: 20
Level Link: Rotates between Concrete Jungle: Blight Boulevard and Concrete Jungle: Blight Boulevard II.

Third Floor:

, 
Name: Further Decline
Depth: 21
Level Link: Rotates between Concrete Jungle: Totem Trouble and Concrete Jungle: Totem Trouble II.

Fourth Floor:

Name: Citizen Uprising
Depth: 22
Level Link: This floor is the same as Concrete Jungle: Briar Bone Barrage.