Using SVN
1) Download and install TortoiseSVN Tortoisesvn.net
2) Make a new folder called st-tbr
3) Press right mouse button on the st-tbr folder and select SVN Checkout
4) Enter
https://st-tbr.svn.sourceforge.net/svnroot/st-tbr
as the repository URL in the text box
5) Leave the other settings as default and click ok. Tortoise SVN will now download all the mod files to the st-tbr folder.
6) Copy (do not move) the files into a freshly installed version of HW2 (version 1.1) and add the overrideBigFile cmd line to a shortcut of HW2
7) Play using the shortcut!