Completed the whole game twice as of now, Dying Light 1 has been my favorite game for around 7 years now and I'm still playing it over and over as I get more people into it. Dying Light 2 has been something the whole community has long been waiting for and it was such an amazing experience, of course at the release there have been bugs, bug the developers have been fixing them left and right and listening to the community.
What the devs have done for the original, Dying Light 2 is getting as well: Events coming up often, bugfixes being done asap, holding Q&As with fans to see what they want added, changed or reworked, and much more. All of that has more than made up for the buggy release, and this being a passion project of Techland I am more than happy to see how far the game has come already.

The parkour has improved drastically and that is easily seen by just starting up the 1st game and comparing it to Dying Light 2. The way the movements flow and the music picking up as you run around is an experience unlike any other!

Combat has also been improved as you can now parry, block and use so many more moves while fighting either zombies or humans (with even more zombie variants releasing and the events making it so much more fun).

The map feels alive and full of different ways to travel, including vents to offer gliding, a ton of add-ons given you side with Survivors, or traps if you've sided with the PKs.

Bloody Ties was an amazing DLC, filled with many new tasks as well as throwbacks to some Dying Light moments! Really hyped for what's in store next! ^^
Until then, good night and good luck!