Ok. Here is the best farming spot I ha e ever found. Load up Mars [b]patrol[/b] make your way to valus's compound, the area guarded by centurions and such. Scale the rock face [b]overlooking[/b] that area. 12 enemies spawn every 10 seconds once you find the right elevated spot. I assure you all this works, I have gotten lgendary engrams from it. I suggest bringing a scout rifle with shoot to loot, an icebreaker and a rocket launcher with surplus. With two people you can kill 72 enemies a minute!