Dying Light is a solid game with a great foundation. The integration of parkour works well and I never really found myself complaining about running around the streets. The combat is hard, especially for beginners, but ultimately it's pretty satisfying getting a slow-motion kill by chopping a zombies head or limb off. There's definitely room for improvement but this is definitely a game that you should pick up if you've been thinking about it.
The decisions that you make and the situations that you are put in provide a pretty eye-opening experience, but the effect wears off. This War of Mine might not be one of the best games of the century, but is definitely one of the strongest games to ever be released on a mobile platform.