All links lead to magnet URIs, use any modern torrent client to download.
Open the .iw5dlc file to install - requires the latest version of IW5M.
The free Face Off maps and Terminal can be obtained by verifying your game files using Steam - you may need to remove caches.xml from the game directory to get IW5M to work
properly again.
Note to seeders: all files except for the .iw5dlc match the original files - you don't need to download them all off of the initial seed.