You should play more and level up. I know that once you each sr46 you see rogue and somthing else and at sr50 you get to have wetwork as your specialization instead of spartan-iv
I was wondering what was the best loadout to destroy the other team and gat a perfection in big team infinity slayer? I was going to start with the DMR for primary and Magnum for secondary, the rest I got stuck with.