Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport03_garage | BOSS | Normal | 7.61 minutes |
| (Co-op) l4d_airport04_terminal | BOSS | Normal | 4.67 minutes |
| (Co-op) l4d_airport05_runway | BOSS | Normal | 8.61 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport03_garage | BOSS | Normal | 7.61 minutes |
| (Co-op) l4d_airport04_terminal | BOSS | Normal | 4.67 minutes |
| (Co-op) l4d_airport05_runway | BOSS | Normal | 8.61 minutes |
| (Co-op) l4d_river02_barge | BOSS | Advanced | 7.91 minutes |
| (Co-op) l4d_river02_barge | BOSS | Advanced | 7.91 minutes |