No Mercy
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_hospital01_apartment |  Viper | Advanced | 7.16 minutes |
| (Co-op) l4d_hospital02_subway | Viper | Advanced | 7.96 minutes |
| (Co-op) l4d_hospital02_subway | Viper | Normal | 7.87 minutes |
| (Co-op) l4d_hospital03_sewers | Viper | Advanced | 8.97 minutes |
| (Co-op) l4d_hospital03_sewers | Viper | Normal | 8.28 minutes |
| (Co-op) l4d_hospital04_interior | Viper | Advanced | 6.79 minutes |
| (Co-op) l4d_hospital04_interior | Viper | Normal | 6.72 minutes |
| (Co-op) l4d_hospital05_rooftop | Viper | Advanced | 8.86 minutes |
| (Co-op) l4d_hospital05_rooftop | Viper | Normal | 9.16 minutes |
Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse | Viper | Advanced | 2.84 minutes |
| (Co-op) l4d_airport01_greenhouse | Viper | Normal | 4.32 minutes |
| (Co-op) l4d_airport02_offices | Viper | Advanced | 7.07 minutes |
| (Co-op) l4d_airport02_offices | Viper | Normal | 12.92 minutes |
| (Co-op) l4d_airport03_garage | Viper | Advanced | 7.78 minutes |
| (Co-op) l4d_airport03_garage | Viper | Normal | 12.59 minutes |
| (Co-op) l4d_airport04_terminal | Viper | Advanced | 4.44 minutes |
| (Co-op) l4d_airport04_terminal | Viper | Normal | 5.19 minutes |
| (Co-op) l4d_airport05_runway | Viper | Advanced | 6.61 minutes |
| (Co-op) l4d_airport05_runway | Viper | Normal | 9.86 minutes |
Death Toll
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_smalltown01_caves | Viper | Advanced | 3.76 minutes |
| (Co-op) l4d_smalltown01_caves | Viper | Normal | 4.01 minutes |
| (Co-op) l4d_smalltown02_drainage | Viper | Advanced | 6.48 minutes |
| (Co-op) l4d_smalltown02_drainage | Viper | Normal | 4.67 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Viper | Advanced | 5.67 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Viper | Normal | 4.31 minutes |
| (Co-op) l4d_smalltown04_mainstreet | Viper | Advanced | 7.15 minutes |
| (Co-op) l4d_smalltown04_mainstreet | Viper | Normal | 4.89 minutes |
| (Co-op) l4d_smalltown05_houseboat | Viper | Advanced | 19.19 minutes |
| (Co-op) l4d_smalltown05_houseboat | Viper | Normal | 10.84 minutes |
Blood Harvest
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_farm01_hilltop | Viper | Advanced | 3.98 minutes |
| (Co-op) l4d_farm01_hilltop | Viper | Normal | 3.05 minutes |
| (Co-op) l4d_farm02_traintunnel | Viper | Advanced | 4.02 minutes |
| (Co-op) l4d_farm02_traintunnel | Viper | Normal | 6.56 minutes |
| (Co-op) l4d_farm03_bridge | Viper | Advanced | 7.45 minutes |
| (Co-op) l4d_farm03_bridge | Viper | Normal | 11.06 minutes |
| (Co-op) l4d_farm04_barn | Viper | Advanced | 3.31 minutes |
| (Co-op) l4d_farm04_barn | Viper | Normal | 8.03 minutes |
| (Co-op) l4d_farm05_cornfield | Viper | Advanced | 11.84 minutes |
| (Co-op) l4d_farm05_cornfield | Viper | Normal | 8.34 minutes |
