Based on Steam release Build 5910756: 5.1 GB, thanks to chronos!

Goldberg crack/emu applied over

100% Lossless & MD5 Perfect: all files are identical to originals after installation

NOTHING ripped, NOTHING re-encoded

Significantly smaller archive size (compressed from 5.1 to 1 GB)

Installation takes 2-3 minutes

After-install integrity check so you could make sure that everything installed properly

HDD space after installation: 5.1 GB

Language can be changed in game settings

At least 2 GB of free RAM (inc. virtual) required for installing this repack