I have just finished Just Cause 2. My rating of it:
9/10 for special effects/graphics
7/10 for story
I think story was way too short, plus what ever happened to all the sections? I was hoping they would show a movie or something, like what happened to Santosi or Razak? Another thing that annoyed me was infinite ammo on some weapons, tanks and helicopters. I think it would be better to have it like "Prototype", about 1000 rounds for each machine gun and perhaps 50 shells for a tank. Otherwise I just buy a razerback and spam a military base with its canon.
I have also an incredible trouble finding a vehicle called "Vanderbilt Leisure Liner". I have 103/104 vehicles and I get achievement when I find all, but it seems just darrn impossible.