Black ops 2 challenges?

I need someone to get these challenges for me. It shouldn't take you long to do just I cant seem to complete them. Ill pay with paypal. Please pm me. Also It'd be best if you had ATLEAST a few vouches.

Crossbow:

1 bloodthirsty medal

EDIT: I posted about this before but my laptops motherboard fried and I just got a new computer

 

I'll do it for $7 paypal. PM me and I'll give you my paypal, can finish it tomorrow after noon. If you wanna send me your info now or in the morning, it'll be done before 5 EST tomorrow

 

Bump?

 

Can this be done in Sticks and stones? If so Ill do it for $5 today.

 

I'm still doing it. for some reason something stupid happened and the challenge didnt go through

 

I don't think it can? I haven't tried it but Viable is already doing it.