Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport02_offices |  the butt ninja | Normal | 7.12 minutes |
| (Co-op) l4d_airport03_garage | the butt ninja | Normal | 5.91 minutes |
| (Co-op) l4d_airport04_terminal | the butt ninja | Normal | 4.40 minutes |
| (Co-op) l4d_airport05_runway | the butt ninja | Normal | 4.69 minutes |
