Load the mission silent cartographer and head left this can be done in any difficulty easy is best, using a parent as a distraction made getting the hunter to turn round better, so when u leave the pelican head left around the island untill u run into some grunts ,jackals and a elites and cortana should say there's and inlet into the island and u should head u thought the cliff and after killing all the grunts, jackals, and elites there will be a little platform and crates with oversheilds, the one player that is the distraction needs to pick up the oversheild and lure a hunter to target them with their melee attack the player that is trying to kill the hunter then must get as close as possible to it just as the hunter finishes his melee attack.