So I bought the game when it first came out and did 15/32 of the main missions while in S. Kyrat. Then I put the game on hold for a while when GTAV came out. I just installed a new graphics card (GTX970) and picked up where I left off. Only trouble is I am now stuck after having done more than half of all the activities. I've done half of all the other campaign missions, with the exception of Yogi and Reggie for which I have only done 1. The Open World campaigns I have finished well more than half, and have found more than half of the undiscovered location, and as of now all the loot chests have been pilfered. The Kyrat airport is still showing red, even though I am pretty sure I did a mission involving that. There are no icons to showing the locations of Sabal or Amita, or Reggie and Yogi, or for bomb defusing missions All of the skills under "Tiger" have been checked off, and all but a few under "Elephant". The remaining items suggest I need to complete "A key to the North" and "Truth and Justice".
There are only two quests/activities/collectibles which I have completed less than half of - the bomb defusing (2/7), collecting the lost letters(9/20), propaganda posters (74/150), the rest are between half and completely finished.,
So, can anyone point me in the right direction here? I've spent a few hours buzzing around just to see if I have missed some secret location which might unlock the "key to the north" mission or something. I did find a locked door to a bunker on the side of a hill. I presume that is tied to a side mission which has not been triggered. I don't know if something is haywire or I am just missing something. I can't imagine what as I have explored just about every square inch. I even re-visited each of the towers, their surrounding buildings, and revisited many of the other buildings to looks for signs of radio equipment for side missions with no luck.
Any help will be most appreciated. TIA!


