Sling Shot Across Last Resort in Halo 3
Go to Last Resort and get the Mongoose. Next, go up the stairs to the to the Fusion Coils. Go right beside the wall facing the Fusion Coils. Get off the Mongoose and it will look like Your going through the wall but you will really be on top of the mongoose. Throw a grenade between the Mongoose and the Fusion Coils. Quickly get back on the Mongoose and the Fusion Coils will explode and u will be Sling Shotted into the air and Across the Map.