skill assessments don't work, i mean i'm playing for a long time now and didn't achieve anything. Somehow my SCAR number of kills raised to 50(lvl2) and stuck there, and i have 0 headshots and all other assessments also 0...
And i'm experiencing experience problems. For example i was almost lvl 13, and next game i'm only 11

so i'm only one with this problem?

For skill assessments, you have to play on a ranked server. Lame, yes. And the experience issue is pretty common it seems. I just leveled to 13, and now I'm 11 again.

And even then, people are reporting that it doesn't even work in Ranked, if you can even manage to play in Ranked match that is. The MP is broken right now.