Remove challenges to unlock items full stop, here's why.

First of all your hit points damage , weapon accuracy and low weapon damage to vehicles using RPG is so messeed up that not even the thoughts of a dementia patient ate as messed up. 

Second still waiting on cooking rue grenades to be implemented instead of just map changes and pretty maps. 

Third who the hell makes a gun mounted jeap a concert able. What military in their right mind would buy that, Id it's a joke make a operator with a Hawaiian hat and shorts to complete the set 

If you can't make your game have accurate hit points accurate damage with weapons and gadgets because it's a steaming pile of crap then don't pit challenges to unlock items where I have to put up with newbies playing cuz red sec is free and sitting in a roof waiting to snipe someone during a bomb disarmament gaming making thebposssibikitt of completing that challenge in my life equal never.