Don't listen to the critics. Awesome game

It truly is. Agreed it is flawed. What game isn't? Personally I prefer it to Call Of Duty (I know)

Pros

Incredible Graphics- You feel immersed into a fantastic landscape to play in.
Realistic Shooting- Well compared to CoD. Admit it CoD's shooting feels really lightweight. Here you can feel a kickback to your guns.
Varying Gamplay- Stealth or All-guns-blazing? Night or Day? Creep behind an enemy and slice his throat with a machete or run in with a Ak-47 and gun him down
Brilliant Fire Physics- Burn down a house but watch out the fire could spread. You have no control over the weather at all which gives a real snse of realism
Buddy System- Shot down? A buddy will rescue you. Watch out though if they get shot and you don't heal them they'll die forever. Help them out and earn bonuses for your safehouses and weapons

Cons

The water is a bit to murky and would be good if you grab enemies and drag them in (like on Splinter Cell)
The animals could be more hostile. Maybe use them to cause confusion amongst your enemies
Vehicles and weapons break far too eassy. I can't believe that it really happens that frequently
Infinite enemies. (I think. If there isn't please tell me in my other FC2 board)

You only live once. Live it up!