Hey pal , I have some advice for you . Start the game with whatever gun you like using and play , we all know how horrendous the matchmaking can be so if you finally see a game where things are going good and your going to win , equip it right before your about to win , that will net you about 4% . Now I'm no crucible god but my k/d is slightly above average so I would basically do the same thing but let's say two kills before I was about to hit a relentless , or other kill streak I would equip the last word , get a couple sniper kills , pop a super get another 2 then switch back to my other primary . I finally decided to focus on the quest yesterday and got the whole thing done is less than an hour and a half. Just waiting for reset now . It's very doable , I have faith in you