Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse |  Silver khimik | Normal | 2.91 minutes |
| (Co-op) l4d_airport02_offices | Silver khimik | Normal | 10.88 minutes |
| (Co-op) l4d_airport03_garage | Silver khimik | Normal | 11.58 minutes |
| (Co-op) l4d_airport04_terminal | Silver khimik | Normal | 6.62 minutes |
| (Co-op) l4d_airport05_runway | Silver khimik | Normal | 7.24 minutes |
