I'm not gonna lie I am not ever looking for achievements in the games I play. Although to be fair I play games for the online multiplayer parts anyways. Other than some games I have to play through on the Wii U with my daughter, I don't play campaigns really. I occasionally add to my repertoire of games and grab another one (got a racing game recently that I haven't opened yet - but I'm a casual gamer) but usually just stay to a few. I change up play between OverWatch, The Division (which yes is kind of campaign), and Halo 5 (multiplayer online only). So I feel like I get a good value out of my games.

These studies can't really be complete though if they aren't taking values of things out of campaign/stories. Just my opinion. Thanks for posting.