Dead Air (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport02_offices | Rombl4 | Expert | 11.45 minutes |
| (Co-op) l4d_airport03_garage | Rombl4 | Expert | 10.91 minutes |
| (Co-op) l4d_airport04_terminal | Rombl4 | Expert | 7.20 minutes |
| (Co-op) l4d_airport05_runway | Rombl4 | Expert | 5.97 minutes |
Blood Harvest (L4D1)
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_farm01_hilltop | Rombl4 | Expert | 3.50 minutes |
| (Co-op) l4d_farm02_traintunnel | Rombl4 | Expert | 3.84 minutes |
| (Co-op) l4d_farm03_bridge | Rombl4 | Expert | 7.57 minutes |
| (Co-op) l4d_farm04_barn | Rombl4 | Expert | 4.73 minutes |
Custom Maps
| Map | Name | Difficulty | Time |
|---|
| (Co-op) l4d_airport02_offices | Rombl4 | Expert | 11.45 minutes |
| (Co-op) l4d_airport03_garage | Rombl4 | Expert | 10.91 minutes |
| (Co-op) l4d_airport04_terminal | Rombl4 | Expert | 7.20 minutes |
| (Co-op) l4d_airport05_runway | Rombl4 | Expert | 5.97 minutes |
| (Co-op) l4d_farm01_hilltop | Rombl4 | Expert | 3.50 minutes |
| (Co-op) l4d_farm02_traintunnel | Rombl4 | Expert | 3.84 minutes |
| (Co-op) l4d_farm03_bridge | Rombl4 | Expert | 7.57 minutes |
| (Co-op) l4d_farm04_barn | Rombl4 | Expert | 4.73 minutes |
| (Co-op) l4d_river02_barge | Rombl4 | Expert | 11.27 minutes |
| (Co-op) l4d_river02_barge | Rombl4 | Expert | 11.27 minutes |