No Mercy (L4D1)
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_hospital01_apartment | BIG CHLEN RETURN RUSSIA | Advanced | 2.62 minutes |
Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport05_runway | BIG CHLEN RETURN RUSSIA | Advanced | 8.63 minutes |
Blood Harvest (L4D1)
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_farm01_hilltop | BIG CHLEN RETURN RUSSIA | Expert | 3.78 minutes |
Crash Course (L4D1)
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_garage01_alleys | BIG CHLEN RETURN RUSSIA | Advanced | 25.58 seconds |
Custom Maps
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport05_runway | BIG CHLEN RETURN RUSSIA | Advanced | 8.63 minutes |
| (Co-op) l4d_farm01_hilltop | BIG CHLEN RETURN RUSSIA | Expert | 3.78 minutes |
| (Co-op) l4d_garage01_alleys | BIG CHLEN RETURN RUSSIA | Advanced | 25.58 seconds |
| (Co-op) l4d_hospital01_apartment | BIG CHLEN RETURN RUSSIA | Advanced | 2.62 minutes |