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Behind the scenes
Run Off was inspired by the original Half-Life multiplayer map Crossfire. It is based on the Half-Life 2 map
d1_canals_07, particularly the APC garage, and also reuses the drainage ditch area from
- Stacking a few props on top of the blue dumpster near the Combine side bunker entrance makes it possible to go out of bounds on the bunker's roof. In addition to providing a good vantage point, this allows one to survive the airstrike while being outside.
- Using the "noclip" cheat reveals an otherwise inaccessible sewer tunnel between the pier and the drainage ditch. It was likely supposed to connect both areas for a better gameplay flow, as the drainage ditch is a dead end, but was left blocked off for unknown reasons.
The Combine control panel used to call in airstrikes.