I wouldn't pay full price for AC:R, but I think it's worth it if you can find it for half price. New gameplay elements (some suck, like tower defense, but the ziplining is fun), new locations, new missions (although not enough). It was enough for me to stay busy for many hours.
The big keep getting bigger and their hearts keep getting harder, an imaginary game, eating at every living thing.
A wide mouth dripping with sarcasm like a bloody fat slash grinning over bleached white-fang teeth that glow like green warning signs of sickness.