Full repack includes: SoC 1.0006 RU, SFZ Project: Episode Zero, English translation, JSGME and a few addons.
1. Unzip the contents of the .7z file
2. OPTIONAL: Launch JSGME.exe and enable the addons you want (I think at least the first 2 are essential but it works fine without them too)
3. Launch the shortcut named 'Launch SFZ Project - Episode Zero' (If this doesn't work for some reason, launch the game through 'xrEngine.exe' inside the 'bin_x64' folder)