Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | | Normal | 3.33 minutes |
| (Co-op) l4d_airport02_offices | | Normal | 9.48 minutes |
| (Co-op) l4d_airport03_garage | | Normal | 11.44 minutes |
| (Co-op) l4d_airport04_terminal | | Normal | 7.45 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | | Normal | 3.33 minutes |
| (Co-op) l4d_airport02_offices | | Normal | 9.48 minutes |
| (Co-op) l4d_airport03_garage | | Normal | 11.44 minutes |
| (Co-op) l4d_airport04_terminal | | Normal | 7.45 minutes |