Mine was 422 and i lost count of my deaths. i was in a glitched private match where you can get xp and stuff with 3 friends and alot of other guys.

My class was the default recon class, kept knifing everyone.
Got 3 AC130's
At least 4 care packages
And 2 harriers.

...the game went on for 3 hours...

using the private xp glitch (not boosting, just playing a really long game)

went 840-114-286

using mostly the akimbo models since is was on rust

game lasted about 3-4 hours

i think i win

TTG_Owner wrote using the private xp glitch (not boosting, just playing a really long game)

went 840-114-286

using mostly the akimbo models since is was on rust

game lasted about 3-4 hours

i think i win

i woulda got more if my mom didnt make me get off xbox360

i think i go tlike 200-300 kills in a glitched private match xp game

i got 700 some kills in one game but i was boosting so i guess that doesnt really count

rust 150-40 rpd

rust 18 person FFA glitch.

145-28

well over 100 in a xp glitch but 50 in a legit game, gotta love chopper gunner

yayayayayay i went 800 and 300 in a private match glitch it was sick man i was like yeah yeah yeah then i got the nuke and was like awwww.... game over but yayayayayayayay.

Scrapyard Hardcore Headquarters

98 - 24 - 13

nuked them at the end..

edit :

i was using M4A1 with Silencer and holographic
And the best for Hardcore HQ : SEMTEX

Perk 1 : Bling Pro
Perk 2 : Cold Blooded Pro
Perk 3 : Ninja Pro

Killstreaks : Harrier , Chopper Gunner , Nuke.