Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport03_garage | D_Skull | Normal | 7.16 minutes |
| (Co-op) l4d_airport04_terminal | D_Skull | Normal | 6.99 minutes |
| (Co-op) l4d_airport05_runway | D_Skull | Normal | 6.20 minutes |
Blood Harvest (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_farm01_hilltop | D_Skull | Normal | 6.64 minutes |
| (Co-op) l4d_farm02_traintunnel | D_Skull | Advanced | 9.65 minutes |
| (Co-op) l4d_farm03_bridge | D_Skull | Advanced | 10.12 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport03_garage | D_Skull | Normal | 7.16 minutes |
| (Co-op) l4d_airport04_terminal | D_Skull | Normal | 6.99 minutes |
| (Co-op) l4d_airport05_runway | D_Skull | Normal | 6.20 minutes |
| (Co-op) l4d_farm01_hilltop | D_Skull | Normal | 6.64 minutes |
| (Co-op) l4d_farm02_traintunnel | D_Skull | Advanced | 9.65 minutes |
| (Co-op) l4d_farm03_bridge | D_Skull | Advanced | 10.12 minutes |