Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse |  Lake Parker | Normal | 7.08 minutes |
| (Co-op) l4d_airport02_offices | Lake Parker | Normal | 14.10 minutes |
| (Co-op) l4d_airport03_garage | Lake Parker | Normal | 10.62 minutes |
| (Co-op) l4d_airport04_terminal | Lake Parker | Normal | 6.05 minutes |
| (Co-op) l4d_airport05_runway | Lake Parker | Normal | 8.07 minutes |
