No Mercy
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_hospital02_subway |  Helpless Little Kitten | Advanced | 6.69 minutes |
| (Co-op) l4d_hospital02_subway | Helpless Little Kitten | Normal | 6.88 minutes |
| (Co-op) l4d_hospital03_sewers | Helpless Little Kitten | Advanced | 7.68 minutes |
| (Co-op) l4d_hospital03_sewers | Helpless Little Kitten | Normal | 8.18 minutes |
| (Co-op) l4d_hospital04_interior | Helpless Little Kitten | Advanced | 5.88 minutes |
| (Co-op) l4d_hospital04_interior | Helpless Little Kitten | Normal | 6.26 minutes |
| (Co-op) l4d_hospital05_rooftop | Helpless Little Kitten | Advanced | 7.95 minutes |
| (Co-op) l4d_hospital05_rooftop | Helpless Little Kitten | Normal | 7.55 minutes |
Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport02_offices | Helpless Little Kitten | Normal | 6.61 minutes |
Death Toll
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_smalltown02_drainage | Helpless Little Kitten | Advanced | 5.38 minutes |
| (Co-op) l4d_smalltown03_ranchhouse | Helpless Little Kitten | Advanced | 6.71 minutes |
| (Co-op) l4d_smalltown05_houseboat | Helpless Little Kitten | Advanced | 9.68 minutes |
