Use the first-person view to locate the next usable opening.
Perspective can change apparent size
Run 71 Speed describes moving through a high-speed tunnel in first person and dodging obstacles with WASD. An obstacle can occupy a small part of the distant scene before becoming much more prominent as it approaches. Watch its relationship to the tunnel's usable space instead of waiting until it fills your immediate view. This is a visual-reading suggestion, not a verified model of how the game changes speed.
Confirm the movement axes
The source names WASD but does not assign every directional effect. Follow the actual instruction and observe how a small input changes your position relative to the next boundary. The scene moving toward you is not the same as you moving sideways or vertically. Keep those different motions clear before making a large corrective input.
Review when the opening became clear
After an attempt, identify the earliest point at which you could recognize the required space. If you waited until the last moment, another attempt can focus on that earlier cue rather than simply pressing faster. The excerpt stops before documenting the full rules, so this article provides no tested obstacle sequence, speed value or record distance. It offers a way to interpret approaching tunnel geometry with the control information the game actually supplies.