Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse |  Ab_Origine | Expert | 4.70 minutes |
| (Co-op) l4d_airport02_offices | Ab_Origine | Expert | 10.38 minutes |
| (Co-op) l4d_airport03_garage | Ab_Origine | Expert | 14.31 minutes |
| (Co-op) l4d_airport04_terminal | Ab_Origine | Expert | 7.53 minutes |
