Unlock pro perks?

Hey there i just want to ask if there is any code that only give like "lightwieght pro" so that you dont have to run or complete all challenges to get it.

You can use an unlocker, or do this through .gsc modding.
I'd say do the first one.
I never use trainers/unlockers so couldn't recommend you any, but I'm sure you'll find what you're looking for if you look in the general cod:mw2 hack forum

I mean for a mod not for my only for my self but for everybody else in the lobby.