No Mercy
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_hospital02_subway |  HumbleNumble | Advanced | 8.86 minutes |
| (Co-op) l4d_hospital03_sewers | HumbleNumble | Advanced | 9.58 minutes |
| (Co-op) l4d_hospital04_interior | HumbleNumble | Advanced | 6.46 minutes |
| (Co-op) l4d_hospital05_rooftop | HumbleNumble | Advanced | 7.89 minutes |
Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport01_greenhouse | HumbleNumble | Advanced | 2.84 minutes |
| (Co-op) l4d_airport02_offices | HumbleNumble | Advanced | 10.42 minutes |
| (Co-op) l4d_airport03_garage | HumbleNumble | Advanced | 11.86 minutes |
| (Co-op) l4d_airport04_terminal | HumbleNumble | Advanced | 11.47 minutes |
| (Co-op) l4d_airport05_runway | HumbleNumble | Advanced | 12.74 minutes |
Death Toll
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_smalltown01_caves | HumbleNumble | Advanced | 3.85 minutes |
| (Co-op) l4d_smalltown02_drainage | HumbleNumble | Advanced | 5.37 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | HumbleNumble | Advanced | 6.45 minutes |
| (Co-op) l4d_smalltown04_mainstreet | HumbleNumble | Advanced | 5.91 minutes |
| (Co-op) l4d_smalltown05_houseboat | HumbleNumble | Advanced | 8.73 minutes |
