Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse |  lesher | Advanced | 3.36 minutes |
| (Co-op) l4d_airport02_offices | lesher | Advanced | 9.15 minutes |
| (Co-op) l4d_airport03_garage | lesher | Advanced | 11.21 minutes |
| (Co-op) l4d_airport04_terminal | lesher | Advanced | 4.86 minutes |
| (Co-op) l4d_airport05_runway | lesher | Advanced | 6.27 minutes |
