Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse |  Killall | Normal | 4.40 minutes |
| (Co-op) l4d_airport02_offices | Killall | Normal | 10.10 minutes |
| (Co-op) l4d_airport03_garage | Killall | Normal | 13.39 minutes |
| (Co-op) l4d_airport04_terminal | Killall | Normal | 8.41 minutes |
| (Co-op) l4d_airport05_runway | Killall | Normal | 8.48 minutes |
