Another way WildStar differentiates itself from other MMOs is with Paths, which are separate from classes. Paths exist to grant players different options when building their characters, adding additional quests and objectives catered to different playstyles. If you choose the Scientist path, for instance, you're going to be given opportunities to learn more about the world, finding additional lore for those interested in collecting everything. Settlers, on the other hand, can build and upgrade camps and cities, which is perfect for gamers looking for a more social MMO.
Soldiers, as you might expect, are given additional quests to slay the indigenous life of Nexus, whereas Explorers can find new routes and entrances to secret areas that the other Paths wouldn't even know existed. The Paths all work together, too, so finding an entrance to a cave with the Explorer will give the Scientist collectibles to find, the Settler people to socialize with, and the Soldier stuff to kill.