Wow, just seen this. I might have to dust off the game after 6 months since I stopped, lol. I got burnt out at Level 57 doing 98% all Co-Op's. I was #1 in the world when I left with a K/D ratio of 67.0 with some 89,000 kills and 1100 deaths. Which at least 500 of those deaths came via a freakin teammate in a team kill.
Edit: I guess I won't be playing after all. I've gotten a Sycn error message the last two days trying to get in. Typical ND, lol... Same thing happen on the games very first double points weekend. Then ND came out with a statement saying sorry about that. Then they came out with another one to make up for it.