Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | Sengil | Advanced | 2.81 minutes |
| (Co-op) l4d_airport02_offices | Sengil | Advanced | 8.08 minutes |
| (Co-op) l4d_airport03_garage | Sengil | Advanced | 9.01 minutes |
| (Co-op) l4d_airport04_terminal | Sengil | Advanced | 4.61 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | Sengil | Advanced | 2.81 minutes |
| (Co-op) l4d_airport02_offices | Sengil | Advanced | 8.08 minutes |
| (Co-op) l4d_airport03_garage | Sengil | Advanced | 9.01 minutes |
| (Co-op) l4d_airport04_terminal | Sengil | Advanced | 4.61 minutes |
| (Co-op) l4d_river01_docks | Sengil | Advanced | 10.18 minutes |
| (Co-op) l4d_river01_docks | Sengil | Advanced | 10.18 minutes |
| (Co-op) l4d_river02_barge | Sengil | Advanced | 10.60 minutes |
| (Co-op) l4d_river02_barge | Sengil | Advanced | 10.60 minutes |