STG 44 Mastery VII - Help with assignment

[Xephic_Za]

Also stuck on this one myself. My play style makes it so much harder.

Edit: below

There apparently is a third hidden objective, where you have to kill either 40 or 60 people with these prerequisites.

STG 44 Mastery VII - Help with assignment
I’ve heard from players ingame, you can do it over a full 3 day in Grand Ops, still confirming this, but at the same time I’m sure it is true as I’ve experienced assignments not completing, but next day (real time) I played they were done.