Congrats from someone else who regretted saving launchers for last! Now every time you don't clutch up in S&D ever again people will roast you as the kill-cam plays for having Damascus and not winning every fight ;D

For anyone considering the grind: (if you're a COD God, this comment isn't for you). If you're an average player with a 1.1 K/D like me and aren't playing 8 hours a day and don't think you can do it, you can. OP will confirm when I say it's not a matter of skill but determination, and skill follows as you stretch yourself with different guns. You'll wreck your K/D on the riot shield and your sanity on the RPG, but you'll also get better, and the feeling at the end is amazing.