| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | Knox | Expert | 1.91 minutes |
| (Co-op) l4d_airport01_greenhouse | Knox | Advanced | 3.89 minutes |
| (Co-op) l4d_airport02_offices | Knox | Expert | 7.01 minutes |
| (Co-op) l4d_airport03_garage | Knox | Expert | 6.97 minutes |
| (Co-op) l4d_airport03_garage | Knox | Normal | 5.65 minutes |
| (Co-op) l4d_airport04_terminal | Knox | Expert | 6.29 minutes |
| (Co-op) l4d_airport04_terminal | Knox | Normal | 7.45 minutes |
| (Co-op) l4d_airport05_runway | Knox | Expert | 7.40 minutes |
| (Co-op) l4d_airport05_runway | Knox | Normal | 5.42 minutes |
| (Co-op) l4d_farm01_hilltop | Knox | Expert | 2.94 minutes |
| (Co-op) l4d_farm02_traintunnel | Knox | Expert | 5.94 minutes |
| (Co-op) l4d_farm02_traintunnel | Knox | Advanced | 5.96 minutes |
| (Co-op) l4d_farm03_bridge | Knox | Expert | 5.99 minutes |
| (Co-op) l4d_farm03_bridge | Knox | Advanced | 7.53 minutes |
| (Co-op) l4d_farm04_barn | Knox | Expert | 3.73 minutes |
| (Co-op) l4d_farm04_barn | Knox | Advanced | 7.48 minutes |
| (Co-op) l4d_farm05_cornfield | Knox | Expert | 8.44 minutes |
| (Co-op) l4d_farm05_cornfield | Knox | Advanced | 8.22 minutes |
| (Co-op) l4d_garage01_alleys | Knox | Expert | 51.43 seconds |
| (Co-op) l4d_garage02_lots | Knox | Expert | 9.27 minutes |
| (Co-op) l4d_hospital01_apartment | Knox | Expert | 2.08 minutes |
| (Co-op) l4d_hospital02_subway | Knox | Expert | 6.95 minutes |
| (Co-op) l4d_hospital02_subway | Knox | Advanced | 7.90 minutes |
| (Co-op) l4d_hospital03_sewers | Knox | Expert | 6.59 minutes |
| (Co-op) l4d_hospital03_sewers | Knox | Advanced | 9.18 minutes |
| (Co-op) l4d_hospital04_interior | Knox | Expert | 4.56 minutes |
| (Co-op) l4d_hospital04_interior | Knox | Advanced | 6.53 minutes |
| (Co-op) l4d_hospital05_rooftop | Knox | Expert | 8.92 minutes |
| (Co-op) l4d_hospital05_rooftop | Knox | Advanced | 10.06 minutes |
| (Co-op) l4d_river01_docks | Knox | Expert | 9.70 seconds |
| (Co-op) l4d_river01_docks | Knox | Expert | 9.70 seconds |
| (Co-op) l4d_river01_docks | Knox | Advanced | 11.86 minutes |
| (Co-op) l4d_river01_docks | Knox | Advanced | 11.86 minutes |
| (Co-op) l4d_river02_barge | Knox | Expert | 7.37 minutes |
| (Co-op) l4d_river02_barge | Knox | Expert | 7.37 minutes |
| (Co-op) l4d_river02_barge | Knox | Advanced | 8.22 minutes |
| (Co-op) l4d_river02_barge | Knox | Advanced | 8.22 minutes |
| (Co-op) l4d_river03_port | Knox | Expert | 6.29 minutes |
| (Co-op) l4d_river03_port | Knox | Expert | 6.29 minutes |
| (Co-op) l4d_river03_port | Knox | Advanced | 9.18 minutes |
| (Co-op) l4d_river03_port | Knox | Advanced | 9.18 minutes |
| (Co-op) l4d_smalltown01_caves | Knox | Expert | 14.70 seconds |
| (Co-op) l4d_smalltown01_caves | Knox | Advanced | 3.55 minutes |
| (Co-op) l4d_smalltown02_drainage | Knox | Expert | 3.52 minutes |
| (Co-op) l4d_smalltown02_drainage | Knox | Advanced | 5.83 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Knox | Expert | 5.89 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Knox | Advanced | 6.50 minutes |
| (Co-op) l4d_smalltown04_mainstreet | Knox | Expert | 5.24 minutes |
| (Co-op) l4d_smalltown05_houseboat | Knox | Expert | 8.69 minutes |
| (Co-op) l4d_smalltown05_houseboat | Knox | Advanced | 10.47 minutes |