ArsTechnica complains about the enemi AI: the nice thing about FarCry 1 was that enemies in outdoor levels would not simply run straight at you.
"The enemy artificial intelligence is also a low point. The waves and waves of pirates that come at you in many missions have a distressingly low sense of self-preservation, often charging your position at full speed, running out in the open just to be shot down easily. Other times they’ll stand there stupidly at point blank range, waiting for you to pivot around and kill them before they react. When the game wants to turn up the difficulty, it usually just throws more of these pirates at you"