Dead Air
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_airport03_garage |  kirkworldbest | Normal | 8.47 minutes |
| (Co-op) l4d_airport04_terminal | kirkworldbest | Normal | 6.48 minutes |
| (Co-op) l4d_airport05_runway | kirkworldbest | Normal | 6.51 minutes |
Blood Harvest
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_farm02_traintunnel | kirkworldbest | Normal | 3.45 minutes |
