Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | ambassador | Normal | 4.80 minutes |
| (Co-op) l4d_airport02_offices | ambassador | Normal | 7.81 minutes |
| (Co-op) l4d_airport03_garage | ambassador | Normal | 14.44 minutes |
| (Co-op) l4d_airport04_terminal | ambassador | Normal | 10.03 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | ambassador | Normal | 4.80 minutes |
| (Co-op) l4d_airport02_offices | ambassador | Normal | 7.81 minutes |
| (Co-op) l4d_airport03_garage | ambassador | Normal | 14.44 minutes |
| (Co-op) l4d_airport04_terminal | ambassador | Normal | 10.03 minutes |