| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | Lost | Expert | 2.44 minutes |
| (Co-op) l4d_airport01_greenhouse | Lost | Advanced | 2.60 minutes |
| (Co-op) l4d_airport02_offices | Lost | Expert | 8.73 minutes |
| (Co-op) l4d_airport02_offices | Lost | Advanced | 8.21 minutes |
| (Co-op) l4d_airport03_garage | Lost | Expert | 8.09 minutes |
| (Co-op) l4d_airport03_garage | Lost | Advanced | 7.07 minutes |
| (Co-op) l4d_airport03_garage | Lost | Normal | 9.68 minutes |
| (Co-op) l4d_airport04_terminal | Lost | Expert | 6.02 minutes |
| (Co-op) l4d_airport04_terminal | Lost | Advanced | 4.45 minutes |
| (Co-op) l4d_airport04_terminal | Lost | Normal | 6.25 minutes |
| (Co-op) l4d_airport05_runway | Lost | Expert | 7.38 minutes |
| (Co-op) l4d_airport05_runway | Lost | Advanced | 9.14 minutes |
| (Co-op) l4d_airport05_runway | Lost | Normal | 9.49 minutes |
| (Co-op) l4d_farm01_hilltop | Lost | Expert | 3.25 minutes |
| (Co-op) l4d_farm01_hilltop | Lost | Advanced | 2.07 seconds |
| (Co-op) l4d_farm02_traintunnel | Lost | Expert | 4.26 minutes |
| (Co-op) l4d_farm02_traintunnel | Lost | Advanced | 3.80 minutes |
| (Co-op) l4d_farm03_bridge | Lost | Expert | 5.05 minutes |
| (Co-op) l4d_farm03_bridge | Lost | Advanced | 9.18 minutes |
| (Co-op) l4d_farm04_barn | Lost | Expert | 3.80 minutes |
| (Co-op) l4d_farm04_barn | Lost | Advanced | 4.63 minutes |
| (Co-op) l4d_farm05_cornfield | Lost | Expert | 10.56 minutes |
| (Co-op) l4d_farm05_cornfield | Lost | Advanced | 8.87 minutes |
| (Co-op) l4d_garage01_alleys | Lost | Expert | 9.17 minutes |
| (Co-op) l4d_garage01_alleys | Lost | Advanced | 6.24 seconds |
| (Co-op) l4d_garage02_lots | Lost | Expert | 12.64 minutes |
| (Co-op) l4d_garage02_lots | Lost | Advanced | 13.24 minutes |
| (Co-op) l4d_hospital01_apartment | Lost | Expert | 22.87 seconds |
| (Co-op) l4d_hospital01_apartment | Lost | Advanced | 25.60 seconds |
| (Co-op) l4d_hospital02_subway | Lost | Expert | 7.07 minutes |
| (Co-op) l4d_hospital02_subway | Lost | Advanced | 6.40 minutes |
| (Co-op) l4d_hospital03_sewers | Lost | Expert | 8.05 minutes |
| (Co-op) l4d_hospital03_sewers | Lost | Advanced | 6.50 minutes |
| (Co-op) l4d_hospital04_interior | Lost | Expert | 5.20 minutes |
| (Co-op) l4d_hospital04_interior | Lost | Advanced | 5.77 minutes |
| (Co-op) l4d_hospital05_rooftop | Lost | Expert | 8.66 minutes |
| (Co-op) l4d_hospital05_rooftop | Lost | Advanced | 7.20 minutes |
| (Co-op) l4d_river01_docks | Lost | Expert | 8.28 minutes |
| (Co-op) l4d_river01_docks | Lost | Expert | 8.28 minutes |
| (Co-op) l4d_river01_docks | Lost | Normal | 51.27 seconds |
| (Co-op) l4d_river01_docks | Lost | Normal | 51.27 seconds |
| (Co-op) l4d_river02_barge | Lost | Expert | 34.29 seconds |
| (Co-op) l4d_river02_barge | Lost | Expert | 34.29 seconds |
| (Co-op) l4d_river02_barge | Lost | Advanced | 8.15 minutes |
| (Co-op) l4d_river02_barge | Lost | Advanced | 8.15 minutes |
| (Co-op) l4d_river02_barge | Lost | Normal | 10.89 minutes |
| (Co-op) l4d_river02_barge | Lost | Normal | 10.89 minutes |
| (Co-op) l4d_river03_port | Lost | Expert | 8.68 minutes |
| (Co-op) l4d_river03_port | Lost | Expert | 8.68 minutes |
| (Co-op) l4d_river03_port | Lost | Advanced | 8.52 minutes |
| (Co-op) l4d_river03_port | Lost | Advanced | 8.52 minutes |
| (Co-op) l4d_river03_port | Lost | Normal | 15.75 minutes |
| (Co-op) l4d_river03_port | Lost | Normal | 15.75 minutes |
| (Co-op) l4d_smalltown01_caves | Lost | Expert | 49.10 seconds |
| (Co-op) l4d_smalltown01_caves | Lost | Advanced | 2.54 minutes |
| (Co-op) l4d_smalltown02_drainage | Lost | Expert | 4.01 minutes |
| (Co-op) l4d_smalltown02_drainage | Lost | Advanced | 3.48 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Lost | Expert | 6.21 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Lost | Advanced | 5.97 minutes |
| (Co-op) l4d_smalltown04_mainstreet | Lost | Expert | 7.09 minutes |
| (Co-op) l4d_smalltown04_mainstreet | Lost | Advanced | 10.50 minutes |
| (Co-op) l4d_smalltown05_houseboat | Lost | Expert | 11.22 minutes |
| (Co-op) l4d_smalltown05_houseboat | Lost | Advanced | 14.32 minutes |