This is my goal 100% unlocks on all "Class" weapons, excluding pistols. Does anyone else have this as a goal or is it just me? By trying this, it makes you use weapons that you may be uncomfortable with, but I enjoy the challenge. below are my stats so far. By my count I only have 10 non pistol weapons left with a bit over 2k kills remaining to finish. Your k/d may suffer a bit, but it does make it interesting. Give it a try.