Danger close 2 bugged challenge says completed but gun still locked

i do too but Danger close 2 normally asks for 300 kills and 150 headshots but mine now asks for 30 kills and 15 headshots, so its weird issue

Same issue here.  Also close quarters SCW-10 is complete but the gun is locked.

same here, Completed Danger Close Challange, got the SG553R but QBZ-192 won't unlock

Oh, i play on PC btw. steam.