You don't need to download both the Torrent file and the download file, but just the download file.
The Torrent's just there if the Download file doesn't work.
Also, if the Torrent doesn't work, its likely to be a problem with your computer, not the download.
Make sure your internet connection is stable and doesn't drop out randomly~
Click on FeralHeart Game Setup - Download
Click on "Save As" And save it in your "C:\" drive.
After it's finished downloading, go to your C:\ drive and the FeralHeart Install set-up should be there. Click on it, and it should start installing.
-Edit- By the way, what AntiVirus program do you use? If you use Norton, you should know some people have had Norton remove some of the Feral Heart game files because it thinks they're "dangerous".