Tsar
The thing that should not be
I'm currently doing the same thing. Takes a while especially when you use the slow rof weapons that feel like absolutely crap.
Assault Rifles - 8/16
Carbines - 7/12
Shotguns - 0/13
LMGs - 1/13
PDWs - 0/14
DMRs - 0/8
Sniper Rifles - 2/13
Hand Guns - 1/17
Already up to 41 088 kills, so it could've been achieved a long time ago lol.
Pfffft been doing that for a while. Done all lmg's except 2. Nearly done assuall rifles, nearly done pdw's.
Its a fun challenge.