Well, i havent played Dying Light 2 but beat Dying Light. If you are a fan of parkouring around a city and killing zombies with modded weapons like electrified baseball bats. You will enjoy it. If you never played the first i would suggest buying that on sale and seeing if youd like the game, you wouldnt be spending as much money either.
Having played Dying Light, i feel like its a game that any zombie shooting/slashing fan would like. The story might not be all that great but i had a lot of fun killing (and also being the zombies) from Dying Light.
Also, if being a "long" game is what your after. Techland or whoever it is boasts that there game is really long to complete.