Go+Left

You go left. The path you have chosen seems to open up into a clearing down the road. As you come into the open, you realize the aliens are waiting for you. You hit the gas to try and get away, but as you zoom past them. They shoot one of the tires on your truck and disabled the car. As they approach your downed vehicle, they begin to chant strange phrases that you are unable to make out. You and Kat grab your weapons and make a dash for the bridge. Once you reach the bridge, and alien airship attempt to make a landing and makes the bridge collapse. You turn around with Kat and attempt to fight off the aliens. Only then you realize that you left your spare ammunition in your truck. It's too late to turn back. Luckily, you remembered to bring your wingsuits. As you make a dash for the canyon edge the aliens continue to blast away at you. You make a leap of faith off the edge of the canyon and soar downwards using your wingsuit. The aliens jump off the edge of the cliff after you, but fall to their doom. Unfortunately, you forgot to pack your parachute, and come crashing into the solid granite ground. Splat. Even though your life has ended, you have saved the lives of many others and your planet! No, just kidding. The aliens destroyed your planet as well. The End.