Playing multiplayer, I noticed that the game's weapon selection is relatively small - 12 primary weapons, 4 secondary weapons, and 4 grenades / other explosives (counting locked weapons here too obviously). The strange thing is though, that when browsing the Operative Status, under Unlocks, it shows that there is a total of 29 weapons to be unlocked...
So are they hiding weapons from us, or did they somehow miscalculate the number of weapons? I originally thought that they might be unlocked by playing SP, but looking back on it, that wouldn't make much sense.