Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse | by Pioneer | Advanced | 4.54 minutes |
| (Co-op) l4d_airport02_offices | by Pioneer | Advanced | 9.85 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse | by Pioneer | Advanced | 4.54 minutes |
| (Co-op) l4d_airport02_offices | by Pioneer | Advanced | 9.85 minutes |