Solved
Dust devil assignment not tracking anti vehicle ribbons
I was trying to complete the Dust Devil assignment but I have started by getting two kills on Gulf of Oman, but after getting in total 7 Anti vehicle ribbons it still wont update the first requiremen...
In addition to the fantastic advice @CyberDyme has given above, you need to earn the anti-vehicle ribbon in a single round, it can't be earned across multiple matches.
Figured it might be worth clarifying just in case. Hope this isn't coming across as being patronising.
