Edward Carnby hangs precariously from a rope against the sheer rock face. Below, the ravine stretches down into nothingness, while above the shape of a ravaged chopper lurches ever closer to the cliff's edge. You've barely a minute to clamber to safety as torrential rain churns the dirt to mud, forcing the flaming wreckage over the side. Wrenching upward, you'll need to swing to dodge the debris tumbling toward you – as the helicopter disintegrates, leaking fuel catches alight, cascading across your path, while red-hot metal and burning upholstery hurtle by. Finally, the entire thing gives way, the rotor blades crack against the rock and spiral violently toward you in a burst of light and noise.