I will hit level 3 tonight, I only play 2-3 hours a night after work. My K/D is 1.03 so you can see I am not that good. Just do the nighfall 1st, reach level 1 and buy the banner. If you want, buy the buff but remember it only lasts 12 hours. Grab all the IB bounties even if you think you won't complete them you might get lucky. I am level 2.5 basically and only played about 6 hours total so in 2 days should not be a problem.