No Mercy
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_hospital01_apartment | Osiris | Advanced | 2.23 minutes |
| (Co-op) l4d_hospital01_apartment | Osiris | Normal | 1.34 minutes |
| (Co-op) l4d_hospital02_subway | Osiris | Expert | 7.78 minutes |
| (Co-op) l4d_hospital02_subway | Osiris | Advanced | 5.88 minutes |
| (Co-op) l4d_hospital02_subway | Osiris | Normal | 4.97 minutes |
| (Co-op) l4d_hospital03_sewers | Osiris | Expert | 5.72 minutes |
| (Co-op) l4d_hospital03_sewers | Osiris | Advanced | 3.93 minutes |
| (Co-op) l4d_hospital03_sewers | Osiris | Normal | 4.56 minutes |
| (Co-op) l4d_hospital04_interior | Osiris | Expert | 5.16 minutes |
| (Co-op) l4d_hospital04_interior | Osiris | Advanced | 5.53 minutes |
| (Co-op) l4d_hospital04_interior | Osiris | Normal | 4.19 minutes |
| (Co-op) l4d_hospital05_rooftop | Osiris | Expert | 7.33 minutes |
| (Co-op) l4d_hospital05_rooftop | Osiris | Advanced | 8.47 minutes |
| (Co-op) l4d_hospital05_rooftop | Osiris | Normal | 7.07 minutes |
Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse | Osiris | Expert | 2.37 minutes |
| (Co-op) l4d_airport01_greenhouse | Osiris | Advanced | 2.80 minutes |
| (Co-op) l4d_airport01_greenhouse | Osiris | Normal | 1.50 minutes |
| (Co-op) l4d_airport02_offices | Osiris | Expert | 8.12 minutes |
| (Co-op) l4d_airport02_offices | Osiris | Advanced | 6.94 minutes |
| (Co-op) l4d_airport02_offices | Osiris | Normal | 6.38 minutes |
| (Co-op) l4d_airport03_garage | Osiris | Expert | 8.26 minutes |
| (Co-op) l4d_airport03_garage | Osiris | Advanced | 7.25 minutes |
| (Co-op) l4d_airport03_garage | Osiris | Normal | 5.57 minutes |
| (Co-op) l4d_airport04_terminal | Osiris | Expert | 4.50 minutes |
| (Co-op) l4d_airport04_terminal | Osiris | Advanced | 4.87 minutes |
| (Co-op) l4d_airport04_terminal | Osiris | Normal | 3.86 minutes |
| (Co-op) l4d_airport05_runway | Osiris | Expert | 6.11 minutes |
| (Co-op) l4d_airport05_runway | Osiris | Advanced | 7.42 minutes |
| (Co-op) l4d_airport05_runway | Osiris | Normal | 6.48 minutes |
Death Toll
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_smalltown01_caves | Osiris | Expert | 3.24 minutes |
| (Co-op) l4d_smalltown01_caves | Osiris | Advanced | 3.69 minutes |
| (Co-op) l4d_smalltown01_caves | Osiris | Normal | 2.36 minutes |
| (Co-op) l4d_smalltown02_drainage | Osiris | Expert | 5.39 minutes |
| (Co-op) l4d_smalltown02_drainage | Osiris | Advanced | 4.78 minutes |
| (Co-op) l4d_smalltown02_drainage | Osiris | Normal | 4.34 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Osiris | Expert | 5.36 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Osiris | Advanced | 4.37 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Osiris | Normal | 4.49 minutes |
| (Co-op) l4d_smalltown04_mainstreet | Osiris | Expert | 6.52 minutes |
| (Co-op) l4d_smalltown04_mainstreet | Osiris | Advanced | 6.63 minutes |
| (Co-op) l4d_smalltown04_mainstreet | Osiris | Normal | 4.42 minutes |
| (Co-op) l4d_smalltown05_houseboat | Osiris | Expert | 8.95 minutes |
| (Co-op) l4d_smalltown05_houseboat | Osiris | Advanced | 8.12 minutes |
| (Co-op) l4d_smalltown05_houseboat | Osiris | Normal | 7.83 minutes |
Blood Harvest
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_farm01_hilltop | Osiris | Advanced | 3.27 minutes |
| (Co-op) l4d_farm01_hilltop | Osiris | Normal | 2.67 minutes |
| (Co-op) l4d_farm02_traintunnel | Osiris | Advanced | 5.48 minutes |
| (Co-op) l4d_farm02_traintunnel | Osiris | Normal | 3.50 minutes |
| (Co-op) l4d_farm03_bridge | Osiris | Advanced | 5.20 minutes |
| (Co-op) l4d_farm03_bridge | Osiris | Normal | 4.88 minutes |
| (Co-op) l4d_farm04_barn | Osiris | Advanced | 4.18 minutes |
| (Co-op) l4d_farm04_barn | Osiris | Normal | 3.46 minutes |
| (Co-op) l4d_farm05_cornfield | Osiris | Advanced | 11.53 minutes |
| (Co-op) l4d_farm05_cornfield | Osiris | Normal | 7.70 minutes |
Crash Course
Custom Maps
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Survival) l4d_farm03_bridge | Osiris | Normal | 11.43 minutes |