Micro-Review: Worth a few hours of your time, nothing more.
True to everything you have heard about it, the game is buggy. Not only that, it is repetitive and consequently boring. It is a great romp around the jungle for a few hours, but you will quickly find that the game simply does not progress beyond that point. You literally just go from point A to point B and blow something up along the way. That is pretty much it.
On top of that the explosions aren't that impressive and prior to playing the game that is what I kept hearing was one of the best parts about it. Crackdown did it better and added more interesting search elements and vertical gameplay along the way. The game is extremely buggy as well. Enemy AI will exhibit odd behavior like showing up in an opposing guard tower, blowing itself up, or sometimes just not dying. Also there is money and artillery littered all over the world. I am not sure if it is supposed to re-generate or not but there is no reason to really ever use the in game purchasing system for new equipment.
Like I said before, it is a good game to play for an afternoon just for some mindless fun, but that is the extent of the depth to this game.