Xbox 360 How to level up fast in Modern Warfare 2?

[Koofoo78]

I can't play online, and my xbox was wiped a while back and I have a friend coming over and I wanna unlock everything so we can play, whats the fastest way to do that?

 

[Yenjeff]

I see it's been a while since this was discussed, but I wanted to add something. Have you tried grinding objective-based modes like Hardpoint or Domination for XP? I've had good luck racking up points just by playing the objective and getting kills along the way. Also, double XP tokens make a huge difference—especially during events. Anyone noticed if certain weapons level up faster than others in specific modes?