How are you getting these done so fast? Private game boosting?
Private KOTH on Gridlock Casual bots 60 second rounds 15 rounds to win. Swap all weapons for boltok. Game lasts 35-40 minutes. Start the game, grab the boltok by the smoke grenade camp on the sniper overlook. The sniper boltok keeps filling up my ammo every 30 seconds as long as I don't use all my shots before picking up a new one. I try to two shot headshot or headshot them when they're down.
I get 15 First Bloods, 220-240 pistol kills (depending on how many bots get lancers), avg about half to 60% as headshots.
I did manage to finish headshots and pistols kills yesterday so now i'm moving onto executions. Essentially it's the same setup except now i'm playing rustlung and downing and chainsawing. I have 5000/6000 so I could get that one today, but these games take 40 minutes and I'd only get 180-200 a match instead.
Essentially depending on the weapon, 1000 kills takes 2.5-3.5 hours of private boosting. So essentially I aim for 1000 a day before playing a couple online versus games for you know, fun.
The idle boosting was as bad as you'd expect, my xbox has been on essentially 24X7 since early November and I just finished up yesterday.
It's honestly not that bad, I have 51 onyx medals and I play the game 12-15 hours a week at most (Granted 80% of that time is boosting). And I only really played at a crazier level when the game first came out.