No Mercy
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_hospital01_apartment |  Gregory House MD | Advanced | 1.89 minutes |
| (Co-op) l4d_hospital02_subway | Gregory House MD | Advanced | 5.10 minutes |
| (Co-op) l4d_hospital03_sewers | Gregory House MD | Advanced | 4.12 minutes |
| (Co-op) l4d_hospital04_interior | Gregory House MD | Advanced | 3.99 minutes |
| (Co-op) l4d_hospital05_rooftop | Gregory House MD | Advanced | 6.78 minutes |
