Same,I'm getting all the perk challenges to the 6th challenge. Once you finish the 6th challenge,you unlock the picture of that perk as an emblem,I have them all except for sitrep,I'm on 573 out of 750 on sitrep
But,there is an elevator on karachi that you can,and run out of the map. I'd be willing to do it for you for free,I'm not a scam,I'm a trusted member,it's up to you really,but I don't mind helping you.