I've gotten a lot more used to the MP and it's a whole lot of fun but woah is it also broken.
The shotgun is in most cases completely useless. I've ran into 3 guys not playing and had to do 3 headshots point blank. And when I'm shooting at active players, I know my shots are hitting them, but still shows on killcam they take all my shots, melees, and still manage to survive and shoot me a few times.
Being meleed from, and I am not BS-ing this, from 10 feet away, and many times, through walls. Even showed on kill cam.
Melee-ing people 5 times but no kill, meleed 3 times and I'm dead.
There are times, people without armor mode, take an entire magazine to be killed, and times where I can shoot a few times and kill.
The lag, many times, is horrendous. My connection is good. This is only game where I'm constantly 2 bars.
Many of these issues really get me pissed off, but overall the gameplay is really fun. I just think if these problems get resolved, the MP can be so much more enjoyable on top of how fun it is already.