I am trying to beat Site 17 on Prospector (mercenary) and after having some trouble I watched Youtube videos of a couple guys doing it. One had a little spark circling around his hand the whole match. Is that an activated Skill? I tried activating Skills for Prospector and it didn't seem to work. Is it something you can do?
Auto turrents next to arms place by the rig
this is the best method for site 17, turrets chew up the jetpackers. also make sure and grab the mines and place them near the entrances.