Collect a set of Seals (1, 2, 3, 4) and find 5 other people that have all the seals.
Or, plan B: collect six sets of Seals, find 5 other people that are experienced and will help you do the SQI arena. The SQI arena is a place where you fight certain MVPs under a certain ammount of time. They come one after the other and is generally easy if you do it right.