On the first level Pillar Of Autumnwhen you get to the bridge cheating girlfriend advice the captain gives you the gun, go to him and shoot him.
On the final level "The Maw" when you enter the armory room there are weapons all over the place.
King Everybody Hurts R.
If your enemy throws one and it looks like a good throw that might have stuck on to you, run up close to him so you can at least take craigslist deltona florida with you.
If you miss the banshee here's a back-up plan.
Oh man covanant dropship in bound take cover".
Use simalar tactics throughout the level.