Based on Steam release BuildID 9196686: 3.6 GB, thanks to Haoose for files!
Goldberg+SSE crack/emu applied over, thanks to Clogcleaner!
100% Lossless & MD5 Perfect: all files are identical to originals after installation
NOTHING ripped, NOTHING re-encoded
Selective Download feature: you can skip downloading and installing of useless PDB file
Significantly smaller archive size (compressed from 3.6 to 1.9/2 GB)
Installation takes from 4 minutes (on 24-threads CPU) up to 20 minutes (on 4-threads CPU)
After-install integrity check so you could make sure that everything installed properly
HDD space after installation: up to 3.6 GB
Repack uses compression library by Razor12911
At least 2 GB of free RAM (inc. virtual) required for installing this repack