Your supposed to get kills in pvp but its pretty much dead so here's a glitch method.
Start "crashed aircraft" run straight into the enemies, you must kill at least one enemy, then let yourself die, rinse and repeat.
Note...
You need to have the "revival master" companion ability or it won't work, also when you die do not use the resurrection module, fully die then re spawn.
You can track the progress in the achievement tracker, if your doing it right you should be getting 2% on each death