Ok, so I was playing Spartan Ops last night and encountered a glitch in Chapter 3 Episode 5. One of the enemies spawned outside of the map completely covered by a rock. So, being the enterprising individuals myself and my friend were, we decided we would try to kill this dude. It took us about an hour, but eventually we got him with a plasma grenade. We wound up recording it in two parts, the first one is me trying to explain the glitch, and if you skip to 7:15 on the second one you can see us get it. Anyways I thought this would maybe help some other people out because once we figured out what to do we were done in 5 minutes.
http://youtu.be/49r6pE2aGa8
http://youtu.be/MNLoo7MKXbo