Fallout 4's Far Harbor DLC takes players to a small island off the coast of Boston which is full of interesting mysteries and surprises. As well as having several joinable factions and a huge number of unique quests and locations, players will also be able to pick up some high-grade loot throughout the island, either as part of quests or through interacting with certain characters. While many of these items can be acquired during the main questline, some will require further exploration off the beaten trail and are entirely missable.