45 Elite Gold Bug No Unlock !!!!!

I played a lot of games, however, to open it zet results. I reached to get that 45 medals, but nothing. In this case, what can I do? I checked with Microsoft's people. They told me I should write here. Somebody help me, because I suffered a lot, but there
is no result.

The achievement name: Achieve an Elite rating in 45 Career Mode events.

Im sorry im Hungarian.

:)

 

Thermail vision

I managed to unlock it on the PP200, UMP-45,and the Sv98. On what guns did you guys unlock it?

 

What Is Your Favorite Weapon/What Weapons Do You Have Equipped?

.45 Shepherd Level 4/Exploding bullets. All unlocks............ You dont need anything else.