Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport02_offices | NIGHTMARE | Normal | 12.88 minutes |
| (Co-op) l4d_airport03_garage | NIGHTMARE | Normal | 9.65 minutes |
| (Co-op) l4d_airport04_terminal | NIGHTMARE | Normal | 7.65 minutes |
| (Co-op) l4d_airport05_runway | NIGHTMARE | Normal | 6.96 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport02_offices | NIGHTMARE | Normal | 12.88 minutes |
| (Co-op) l4d_airport03_garage | NIGHTMARE | Normal | 9.65 minutes |
| (Co-op) l4d_airport04_terminal | NIGHTMARE | Normal | 7.65 minutes |
| (Co-op) l4d_airport05_runway | NIGHTMARE | Normal | 6.96 minutes |