Based on Steam release Build 5554425: 6 GB, thanks to chronos!
Goldberg emu/crack 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 6 to 1.5 GB)
Installation takes one minute
After-install integrity check so you could make sure that everything installed properly
HDD space after installation: 6 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
Operating System: Windows 7 64 Bit
Processor: Intel® Core™ i5-2500K / AMD FX-6300
RAM: 8 GB
Video Card: Nvidia GeForce GTX 750 Ti 2GB / AMD Radeon R7 360 2GB
DirectX: 11
HDD Space: 6 GB