| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | MIDDLAW | Expert | 2.41 minutes |
| (Co-op) l4d_airport02_offices | MIDDLAW | Expert | 7.15 minutes |
| (Co-op) l4d_airport03_garage | MIDDLAW | Expert | 7.81 minutes |
| (Co-op) l4d_airport04_terminal | MIDDLAW | Expert | 7.71 minutes |
| (Co-op) l4d_airport04_terminal | MIDDLAW | Normal | 6.16 minutes |
| (Co-op) l4d_airport05_runway | MIDDLAW | Expert | 10.13 minutes |
| (Co-op) l4d_farm01_hilltop | MIDDLAW | Expert | 3.51 minutes |
| (Co-op) l4d_farm02_traintunnel | MIDDLAW | Expert | 8.37 minutes |
| (Co-op) l4d_farm03_bridge | MIDDLAW | Expert | 8.48 minutes |
| (Co-op) l4d_farm04_barn | MIDDLAW | Expert | 4.76 minutes |
| (Co-op) l4d_farm05_cornfield | MIDDLAW | Expert | 11.91 minutes |
| (Co-op) l4d_garage01_alleys | MIDDLAW | Expert | 10.10 minutes |
| (Co-op) l4d_garage01_alleys | MIDDLAW | Advanced | 52.32 seconds |
| (Co-op) l4d_garage02_lots | MIDDLAW | Expert | 28.11 minutes |
| (Co-op) l4d_garage02_lots | MIDDLAW | Advanced | 16.43 minutes |
| (Co-op) l4d_hospital01_apartment | MIDDLAW | Expert | 2.88 minutes |
| (Co-op) l4d_hospital01_apartment | MIDDLAW | Advanced | 3.35 minutes |
| (Co-op) l4d_hospital02_subway | MIDDLAW | Expert | 8.02 minutes |
| (Co-op) l4d_hospital02_subway | MIDDLAW | Advanced | 8.72 minutes |
| (Co-op) l4d_hospital02_subway | MIDDLAW | Normal | 5.56 minutes |
| (Co-op) l4d_hospital03_sewers | MIDDLAW | Expert | 10.22 minutes |
| (Co-op) l4d_hospital03_sewers | MIDDLAW | Advanced | 9.39 minutes |
| (Co-op) l4d_hospital03_sewers | MIDDLAW | Normal | 5.42 minutes |
| (Co-op) l4d_hospital04_interior | MIDDLAW | Expert | 7.99 minutes |
| (Co-op) l4d_hospital04_interior | MIDDLAW | Advanced | 6.33 minutes |
| (Co-op) l4d_hospital05_rooftop | MIDDLAW | Expert | 9.81 minutes |
| (Co-op) l4d_hospital05_rooftop | MIDDLAW | Advanced | 16.57 minutes |
| (Co-op) l4d_river01_docks | MIDDLAW | Expert | 22.62 seconds |
| (Co-op) l4d_river01_docks | MIDDLAW | Expert | 22.62 seconds |
| (Co-op) l4d_river02_barge | MIDDLAW | Expert | 9.60 minutes |
| (Co-op) l4d_river02_barge | MIDDLAW | Expert | 9.60 minutes |
| (Co-op) l4d_river03_port | MIDDLAW | Expert | 8.16 minutes |
| (Co-op) l4d_river03_port | MIDDLAW | Expert | 8.16 minutes |
| (Co-op) l4d_smalltown01_caves | MIDDLAW | Expert | 1.36 minutes |
| (Co-op) l4d_smalltown01_caves | MIDDLAW | Advanced | 5.11 minutes |
| (Co-op) l4d_smalltown01_caves | MIDDLAW | Normal | 44.25 seconds |
| (Co-op) l4d_smalltown02_drainage | MIDDLAW | Expert | 9.38 minutes |
| (Co-op) l4d_smalltown02_drainage | MIDDLAW | Advanced | 8.31 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | MIDDLAW | Expert | 6.49 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | MIDDLAW | Advanced | 7.65 minutes |
| (Co-op) l4d_smalltown04_mainstreet | MIDDLAW | Expert | 7.81 minutes |
| (Co-op) l4d_smalltown05_houseboat | MIDDLAW | Expert | 12.69 minutes |