I'm the opposite, I managed to get everything done but my sniper rifles and marksmen. I breezed through the mk2, but the kar98 and ebr just don't feel as fun, and I'm dreading it. I think I might have one of the sniper rifles done from a ground war stint. Rarely play GW.
I honestly loved doing the oden, famas, and fal. Oden just felt great destroying people but was annoying cause I did it when mp5 was all the rage; so I had to deal with that.. abit of a nightmare to deal with on an oden setup as a dmr. Just the elephant hunter of a gun with a long ass barrel and it's big fucking silencer, the one two head shot was satisfying. FAL is just my classic gun of my G3 days. The only frustrating bit I had with the famas was doing long shots.. For whatever reason, I guess because call of duty.. I didn't consider changing fire modes to single, but after.. ended up flying through it. I usually burn all my mounted kills in shipment, and pubstomp 10man Dom or Regular Dom. Shipment is prob more efficient, but I enjoyed being able to set up my own little grind house.
Most fun was pistols to me, and was the first thing I platinumed. I didn't think about running hardcore, so for a good 90% of them(m13 was the gun I mostly did on hc).. I was just running regular games. Once I realized hardcore queue, I pretty much only used the 1911.. It just feels so broken, one tap hs with such accuracy from so far away felt unfair, or cleaning up a room of people with just the 1911. Don't even get me started on nightmode, pistols didn't have to deal with the Lazer ads. It is also the most salt inducing gun I've experience on particularly hardcore shipment, people foam at the mouth from getting destroyed by it.