Will I get any weapons or something usable in multiplayer if I complete Singleplayer? Does Difficulty matter? (Battlefield 3 did unlock something in multiplayer. Or at least co-op did. If I remember clearly.)
It's not like I'm not interested in the story or it's that hard to headshot everyone through the map, but it can be annoying on harder levels. I'm trying to decide if it's worth plaything through the harder difficulties, so knowing what I might get is good to know.