You must have every single part of the set (e.g., Part 1 through Part 10) saved in the same folder.
Released in 2013 by Infinity Ward, Ghosts introduced a few unique elements to the franchise: Call.of.Duty.Ghosts.MULTi6.part2.rar
It looks like you're dealing with a specific file——which is a compressed archive part for the game Call of Duty: Ghosts . Specifically, this is the second part of a "Multi6" release, meaning the game files include support for six different languages. You must have every single part of the set (e