No Mercy (L4D1)
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_hospital03_sewers | MidsizeSiren | Advanced | 7.94 minutes |
Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport04_terminal | MidsizeSiren | Advanced | 7.06 minutes |
| (Co-op) l4d_airport05_runway | MidsizeSiren | Advanced | 16.57 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport04_terminal | MidsizeSiren | Advanced | 7.06 minutes |
| (Co-op) l4d_airport05_runway | MidsizeSiren | Advanced | 16.57 minutes |
| (Co-op) l4d_hospital03_sewers | MidsizeSiren | Advanced | 7.94 minutes |