with the steam version of the game, saves your game to
C:\ Program files X86 \ Ubisoft \ Ubisoft game launcher \savegames \ *a folder with a long series
of letters and numbers Varies from system to system* \ 856
the Uplay only version they go in
C:\ Program files X86 \ Ubisoft \ Ubisoft game launcher \savegames \ *a folder with a long series
of letters and numbers Varies from system to system* \ 420
if ya need backed up save files you can get mine here ..the .zip has a read me on how use them
http://www.filedropper.com/farcry4saves
my archive contains almost every mission