Not had a chance to play much, but I did manage to kill a shark with a grenade, so it's pretty great so far.
Glad they kept the fire physics from FC:2, that was one of the best parts of that game (the malaria thing was rubbish, almost stopped me from finishing it).
The wild-life can also be used strategically, I took out an enemy camp with a Tiger. Amazing.
Waaay too many tutorial pop-ups in the first hour though, that got annoying.
Also the guy you're playing as is a trust-fund douche-bag, I can't really empathise with his situation (or his friends, they all deserve to die), but the villains
are great characters though.