(adsbygoogle = window.adsbygoogle || []).push({}); So, i faced a hacker that completed all my challenges but i didnt got xp, only callsigns and titles, im level 55 of the first prestige and its very boring to level up since all my challenges are completed, well, is there anyway to reset the challenges or reach level 70 of the first prestige instantly?

Try bypassing the 1.12 patch with a proxy and you might find someone with a challenge lobby who feels nice enough to help you. Or you could just do the old prestige hack to get to your desired prestige rank one and then you can start doing all the challenges again.

i dont know how to do these things...
isnt there a editor to reach the prestige you want?

there tutorials in mw2 exploits hack section