| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport01_greenhouse | KZTO | Advanced | 3.01 minutes |
| (Co-op) l4d_airport01_greenhouse | KZTO | Normal | 2.73 minutes |
| (Co-op) l4d_airport02_offices | KZTO | Advanced | 6.80 minutes |
| (Co-op) l4d_airport02_offices | KZTO | Normal | 8.84 minutes |
| (Co-op) l4d_airport03_garage | KZTO | Advanced | 7.04 minutes |
| (Co-op) l4d_airport03_garage | KZTO | Normal | 9.97 minutes |
| (Co-op) l4d_airport04_terminal | KZTO | Advanced | 6.98 minutes |
| (Co-op) l4d_airport04_terminal | KZTO | Normal | 5.63 minutes |
| (Co-op) l4d_airport05_runway | KZTO | Advanced | 7.27 minutes |
| (Co-op) l4d_farm01_hilltop | KZTO | Advanced | 3.35 minutes |
| (Co-op) l4d_farm02_traintunnel | KZTO | Expert | 10.60 minutes |
| (Co-op) l4d_farm02_traintunnel | KZTO | Advanced | 5.24 minutes |
| (Co-op) l4d_farm03_bridge | KZTO | Expert | 8.73 minutes |
| (Co-op) l4d_farm03_bridge | KZTO | Advanced | 9.35 minutes |
| (Co-op) l4d_garage01_alleys | KZTO | Expert | 13.28 minutes |
| (Co-op) l4d_garage02_lots | KZTO | Expert | 10.90 minutes |
| (Co-op) l4d_hospital01_apartment | KZTO | Advanced | 2.92 minutes |
| (Co-op) l4d_hospital02_subway | KZTO | Advanced | 8.31 minutes |
| (Co-op) l4d_hospital04_interior | KZTO | Expert | 6.38 minutes |
| (Co-op) l4d_river01_docks | KZTO | Expert | 9.34 minutes |
| (Co-op) l4d_river01_docks | KZTO | Expert | 9.34 minutes |
| (Co-op) l4d_river01_docks | KZTO | Advanced | 13.35 seconds |
| (Co-op) l4d_river01_docks | KZTO | Advanced | 13.35 seconds |
| (Co-op) l4d_river02_barge | KZTO | Advanced | 11.16 minutes |
| (Co-op) l4d_river02_barge | KZTO | Advanced | 11.16 minutes |
| (Co-op) l4d_river03_port | KZTO | Advanced | 9.84 minutes |
| (Co-op) l4d_river03_port | KZTO | Advanced | 9.84 minutes |
| (Co-op) l4d_smalltown01_caves | KZTO | Expert | 3.57 minutes |
| (Co-op) l4d_smalltown02_drainage | KZTO | Advanced | 4.74 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | KZTO | Advanced | 7.32 minutes |