The "Quake.Enhanced.Update.2-PLAZA.rar" likely refers to a pirated repack of the " Update 2 ," which was officially released by Bethesda and Nightdive Studios on December 2, 2021 .
: The ability to play previously downloaded add-ons while offline. Quake.Enhanced.Update.2-PLAZA.rar
For a "helpful blog post" perspective, the following official and community sources detail exactly what this update added and how it changed the game: The "Quake