I, not huge into zombie games either but the first one was great. Playing the first one isn’t necessary to play the second. The second one looks like a fleshed out version.in other words, everything that was good about dying light is just bigger, better and more of, in 2.
My favorite part of the series is just how they handle the day/night cycle. When the sun sets a different breed of zombies that are 10x stronger come out and it really gets tense. If you are in a safe house you can fast fwd back to day but if you are out you really are underpowered compared to the zombies so you have to literally sneak around or bunker down somewhere until dawn comes back. Your experience or rewards for surviving and or killing while oit at night goes up too. Good balance to it.