animation's hit and miss; some of the movement looks clunky but the way some of the climbing zombies seem to be actually reaching for parts of the scenery look really good.
but...as a supposed film tie-in, this unlimited amount of high grade military weaponry is a killer. seems to take it from a proper survival sitch to a "get from A to B and get a killcount in the 5 figures", which would seem to have a far shorter shelflife for interest than a proper atmospheric game would have.