Posted by: Hawaii6U
I disagree with doubles being an easy 50. I have 4 50s on my main, and by far doubles took the longest in coming. Play Lone Wolves until you get a 45, then go play Slayer or Swat or Snipers. All easier than Doubles, in mine and many friends' opinions.
doubles is by far the easiest 50
all you need is a decent friend and a good team shot and bang you have a 50
no skill needed