Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse |  Dipsy | Advanced | 2.80 minutes |
| (Co-op) l4d_airport02_offices | Dipsy | Advanced | 11.73 minutes |
| (Co-op) l4d_airport03_garage | Dipsy | Advanced | 12.60 minutes |
| (Co-op) l4d_airport04_terminal | Dipsy | Advanced | 7.35 minutes |
| (Co-op) l4d_airport05_runway | Dipsy | Advanced | 9.15 minutes |
