I am entirely addicted. I loved Dying Light back in the day but this is on another level entirely. Side quests are abundant and as well developed as the story quests. Some have said the story isn't great but I found it quite engaging. I definitely wouldn't say it's great for the story, but it does help move you along.
The traversal and combat is what you're here for. Parkour is smooth and satisfying, and the world you're in is much more detailed than the last game. There are unique building interiors, nervous dark zones, all sorts of shops to explore, and the day and night cycle is really unique. Totally changes the game.
The combat is the same as the first game, with a few added moves that make it much better; it feels heavy and dangerous. You can easily get overwhelmed but when you get it right it's just simple fun.
9.5/10, some bugs still but base game is one of the best I've seen.