Killzone 2 help me wif info?

KZ2 online is awesome. It has a ranking system, and a bage/mdal system. You earn badges for doingcertain things, and medals for collecting X amount of badges(i think its 8 for all of them, but im not certain). as you unlock, medals and such you unlock certain abillities and cles. As you progress in online play, you can mix and match cles. Which makes it a lot of fun. II think its better than cod5, and you can make the control(on) layout almost exacltly like cod. But your control over the player is different, I love the control system, i find it to be realistic, and not hard at all. I recommend this game to anyone who likes fpses