Dying Light 2 Stay Human
Microtransactions in Dying Light 2 Stay Human are summarized as...
At launch the games has 2 "premium" editions. The first grants mostly cosmetic content but will also grant access to one of the upcoming DLC. The second grants access to 2 upcoming DLC but will also provide in-game bonuses in the form of bonus XP earned.
At this point the game does not feature microtransactions of any kind.