Everything online is ownage in that game. Terrorist hunt, sharpshooter its all good. Havent played the single player much though.
The only problem is running into little 5 year olds (it happens to me alot) who think they are god at the game and there way to play is the only way. I joined a TH game the other day and god forbid I don't have armor and i use a silencer on my gun. So they gave me shit about it for like 5 rounds even though i had the most kills every time, im also a 1st Sergeant and 2 of them were elite. Then they ended up booting me because even though i had the most kills and only died once i still "sucked and was garbage because I don't ware armor" ... Along with that too, for the most part rank doesn't mean shit other than that you have more selection to armor. People can glitch and whore TH to get elite and blow horrible at sharpshooter.
PS Get some people together and play attack and defend, be on defense and have everyone get shields SPARTAAAAAAAAAAAAAAAAAAAAAAAAAAAAA. Its awesome.