Take the “sixty-six tons of straight up, H-E-spewing dee-vine intervention” that Johnson gave you. The Warthog is nowhere near strong enough to survive the attacks you are about to face. Destroy all of the Ghosts that come your way. Be sure that they are completely destroyed—if you leave one alive, it will fire on you and you will have little chance of surviving. Take out the Wraith as soon as you have a clear shot. Be careful not to fall into the hole as you drive across the bridge. Take out Banshees as they fly by. Destroy anything at the tunnel entrance below, then look toward the skyscrapers because six Banshees will fly from them.