I finally got around to doing some research around this, after the butloads of hype my friends have been randomly pumping into conversations, and I really don't get it. It's a pointless addition to an average game, with no innovations gameplay wise. Heck, the gameplay looks like it's slowly turning into 'Explosive spam 7: random mouse movements+left click'. And the graphical aspects don't make up for it at all. This is worse than when nazi zombies tried to be gritty and realistic. With a lightning gun.