Halo Tips

mortar tank manuever
This works for any difficulty, especially Legendary. The mortar tanks are a pain, and slow. So if you want to blow them up without dieing, here's what you do. Grab a ghost. Fly straight at the mortar tank and run into it. You will do a complete back flip over the tank landing behind him. Then you can blast him with a rocket or something when his back is turned.