The Pendulum Game

Inside the hangar the man hangs upside down from a thick rope. The rope is attached to the propeller of a plane. In his hand a gun. Another man sits on top of the plane, getting ready to swing himself with the unattached part of the rope so that he somehow can get closer to the other man and perhaps release him. The hanging man yells warnings - don't come closer or I'll shoot you. But the other man does an acrobatic move, and manages to get enough momentum to swing himself like a human pendulum up and wrapped around the body of the plane so that he ends up exactly next to the hanging man. Hanging man tries to fight. Other man manages to shield himself and finally unties hanging man. That is when I see the symbol that signifies this part of the game. I quickly run out of this room and outside I see the whole map. For a moment the outline of each secret symbol light up. I wish I could memorize them all, but all I can remember is that one of them is near a cave by the beach.