1. Grenades. They get me every time. Sometimes, when there is no grenade around, I will run in a random direction and find one.
2. Bolt action sniper rifles. Not that I get killed by them too often, but trying to use one of them equals death. I am a terrible sniper.
3. The Gun Master mode. Who ever thought that shit up? I'll be running around with my MP443 getting headshot by the guy who took five minutes to advance to a JNG90.
4. Running around corners. Yep. I'm still doing that. And in spite of my complaints, the corners have still not been nerfed. Seems DICE only listens to the whines of angry forum trolls.