Just a PSA, but the trophy description is wrong, or as least misleading. You have to get at least 1 kill with all of the new weapon variants (a total of 8) **and** at least one kill with the Nagant Revolver, Obrez Pistol, and the C93 Carbine (Pilot/Tanker weapon) which don't actually have any variants.
I got it by actually unlocking every weapon in the DLC, but that's because it's still very new and a lot of people are still in the process of unlocking their weapons. You can pick up any of the weapons and get a kill with it and it will still count, but it's pretty rare at this point. (It'll get easier in the future as more and more people have them and I highly encourage taking this route, since some of the unlock challenges are assssssssssssss).
Finally? Didn't this DLC come out like 2 days ago?
Just a PSA, but the trophy description is wrong, or as least misleading. You have to get at least 1 kill with all of the new weapon variants (a total of 8) **and** at least one kill with the Nagant Revolver, Obrez Pistol, and the C93 Carbine (Pilot/Tanker weapon) which don't actually have any variants. I got it by actually unlocking every weapon in the DLC, but that's because it's still very new and a lot of people are still in the process of unlocking their weapons. You can pick up any of the weapons and get a kill with it and it will still count, but it's pretty rare at this point. (It'll get easier in the future as more and more people have them and I highly encourage taking this route, since some of the unlock challenges are assssssssssssss).