I've been playing it for about 3 to 4 hours, can't quite remember..but so far it's been great. The story line isn't great, but it's still pretty good. I haven't gotten to deep into it. I've spent most of my time exploring the land and hunting animals for their skin to upgrade my items, which is pretty important.
The guns are fun to use. They feel realistic with the handling and they sound cool. No more jamming either(I kind of liked that from Far Cry 2)
The graphics are outstanding. It just cries out for exploration. The main characters look like some of the best yet while the other AI look good but not great. The enemy AI is also smarter than in previous Far Crys, they try to flank you when you're pinned down.
The sneak ability and the hunting(and the RPG aspect of the game) are so far my most favorite aspects of the game, rent it for sure!
I've played a ton of games in my life but this one is by far the best. You can play this game for hours on end and not want to quit. The cool thing about this game is you can continue to roam free after beating it. I give this game a 10/10.. like I said, one of the best/funniest games I've ever played in my 20 year game playing span!