Use Fighting Lion (takes up the energy weapon slot), Do the nightfall Lake of Shadows when it comes up as many times as it takes to get the Militia's Birthright 'nade laucher from that to use as well. (fills the kenetic slot) and grab your favourite heavy 'nade launcher and be patient in PvP Oh and if you're a hunter, run top tree tether (imo) and hope to tether a few at once and lob those launchers at them for multikills. Haven't done it yet myself but thats the strats I've heard about