Based on how these "reuploads" are structured by community members like , the archive usually includes:
The full version of the Fortnite client as it existed during the v3.5 update (circa April 2018). Fortnite 3.5 reupload by blk.rar
Executable files ( FortniteClient-Win64-Shipping.exe ) used to launch the game. Based on how these "reuploads" are structured by
The specific version of Unreal Engine 4 files required to run that build. Fortnite 3.5 reupload by blk.rar