In single player I have completed each campaign mission, including the DLCs, at least three times, since I am just as keen on collectibles and achievements as the next guy or girl. I am also usually pretty good at evading detection when playing solo. And I can also fairly claim that I have put enough hours into playing the campaign, DLC and survival missions by myself that by now I have truly mastered my primary weapon, which is a Carcano rifle. I recently played a lot of SNIPER ELITE 4 cooperative maps, like, really a lot.