I was using my necromech in all case and mostly in guard mode. I was not directly standing next to the mixer but some distance away. I engaged and destroyed a large number of grineer, drop pods and landing craft/ships.
I have completed a number of steel path plague star bounties and each time I do not get 1100 operation faction for the defense stage. All of the other team members were awarded the 3900 for completion and I only received 2800. I have tried on Advanced as well and they same thing happens although the numbers are obviously lower.