Does completing challenges in Modern Warfare 2 MP improve your skill or are these challenges just "for fun"?
I've heard people say that "completing Marksman I challenges make you aim better", or "completing marathon challenge makes you run faster". Are they right?
Best Answer
Well, they neither do improve your assist nor they are just for fun. Completing marksman challenges only unlock weapon attachments, which might offer new tactical alternatives, depending on your playstyle.
There are bugs in the game where equipping a visor attachment (holographic, ACOG) actually will increase accuracy slightly whem aiming down sights on some guns (won't go into detail), but that is a different question.
Completing other challenges have various effects, namely they upgrade your perks from basic to Pro.