Likely refers to the original uploader or the site where the file was hosted (Kickass Torrents or KatMovieHD).

If you want to watch Death Tunnel legally:

[Level 5: Top Floors] ---> College Students Trapped for Initiation Prank | v [Level 1-4: Haunted Wards] -> Attacked by White Plague Ghost Nurses | v [Ground Zero: The Body Chute] -> The Only Way Out is Through the 500ft Death Tunnel Production and Cast

If you're a fan of 2000s horror and want to dive deeper into this, to other 2005 horror films. A summary of the best scenes to watch out for.