Based on Steam release Build 3022985: 2.5 GB, thanks to chronos!
Goldberg emu/crack applied over
CreamAPI Steamworks Fix (which allows multiplayer via Steam) can be found in NoDVD folder after installation
100% Lossless & MD5 Perfect: all files are identical to originals after installation
NOTHING ripped, NOTHING re-encoded
Significantly smaller archive size (compressed from 2.5 to 1.2 GB)
Installation takes 2-3 minutes
After-install integrity check so you could make sure that everything installed properly
HDD space after installation: 2.5 GB
Language can be changed in game settings
Repack uses XTool library by Razor12911
At least 2 GB of free RAM (inc. virtual) required for installing this repack