Immediately grab the two pedestrians and webswing them to the ambulance one by one. Then swing into the tunnel. Once Beetle puts up the forcefield, climb up the wall and out of the tunnel. Since Beetle sets so many forcefields at varying heights, you need to always webswing while holding R1 + Webclimb during the chase. This will allow Spider-Man to get the necessary height he needs at all times. Just follow Beetle through the streets, stopping only to save the woman in the burning building and the citizens in the cars.