How do you level up quickly in COD MW2?

Answer 1

The key to moving up quickly is to understand that points, not kills, is what your rank is based on. Sure, you get points for kills, but you never move up as fast unless you're gaining other points in the process.

Quickest way is to play Domination - unlike Headquarters, you stand a better chance of not having to deal with campers since it tends to move faster. But it's still completely dependent on the team you're with.

Domination is a simple concept - each map has 3 flags, and 2 of them are the best to capture and defend from. But the key is that you only need 2 flags to win.

If your team wins the match, you get higher match bonus points. With XP bonuses from challenge completions, flag captures, etc., your average match point total can be from 3000 to 10,000. I had one match where my point total was 65,000 - it was the last match that pushed me to 70.

By comparison, TDM and other matches don't have the extra capture bonuses and points opportunities that Domination and HQ have.