Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport02_offices | | Expert | 12.14 minutes |
| (Co-op) l4d_airport03_garage | | Expert | 10.82 minutes |
| (Co-op) l4d_airport04_terminal | | Expert | 4.11 minutes |
| (Co-op) l4d_airport05_runway | | Expert | 7.23 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport02_offices | | Expert | 12.14 minutes |
| (Co-op) l4d_airport03_garage | | Expert | 10.82 minutes |
| (Co-op) l4d_airport04_terminal | | Expert | 4.11 minutes |
| (Co-op) l4d_airport05_runway | | Expert | 7.23 minutes |