I have been iron 1 since the game released (sucks I know) but I finally made it to iron 2. Do you guys have tips on how to rank faster?

Basically the title. I've been playing for a few weeks now and I've basically settled into maining Fade/Viper. One of my buddies said I should be trying out other roles like Duelist and suggested Yoru. I honestly doubted that I would enjoy...

I was just playing Deathmatch and was getting a lot of first shot running head shots with my Vandal. I noticed after each time I had still taken a bit of damage. Perhaps the key was they hit me first with a body shot -- slowing me down to 2...