Fog Of War - Complete Edition
This is for the DLC, I wrote a review of the game itself, you can find it here: https://steamcommunity.com/id/-TexWiller-/recommended/691020/

So you played the free game and gathered enough in game currency to unlock first scoped version of a weapon, just to notice that you couldn't. Well, lucky you, The Complete Edition DLC gives you the chance to actually unlock things with the ingame currency that you still need to gather. Unfortunately most of the things are behind this paywall.
If you really want to play this game after checking the reviews of it and even after you tested the game, then you really probably should buy this one, but I can't recommend this DLC anymore than I could the game itself.