Not sure if anyone still has an interest in this game but if there is, there are some zombie cheevos I never got around to accomplishing if anyone wants to grind them out. It's been ages since I've played this though and I was always middle of the road when it came to my stats with zombies anyway. I've given up on the notion of ever reaching prestige with how bad the MP lobbies are. I kick myself for not playing this game more often when it came out, lol.
If interested though just send a message my way on here and maybe we can work something out.