GamerGod - Can we get some insight into what might make a level 4 mission require multiple players to complete?

Magnus - There is nothing that absolutely requires you to have multiple players to complete the missions, but mainly it's the time and difficulty factor that differentiates them from each other. As an example, a "kill" mission requires you to go to multiple locations attacking a number of NPC's on each location and a courier mission requires a number of trips on industrials to complete. The increased time factor of the new missions will affect the ability to get the bonus rewards, hence giving you an incentive to finish quickly with friends rather than soloing. Of course soloing is still possible, giving you the full bounties instead of sharing them, but players should be aware of the added difficulties. The addition of new Complexes, aka Dungeons, allows the agent system to dynamically create Complexes for level 4 missions.