I can see improvement in patch 1.8. I got better result. But 80% of AI problems are remaining. Very very buggy. Much buggyer than Crysis, much much much buggyer than Farcry. Lack of extremely basic parts. Still pre-pre-alpha version.
On the part where you have to hold off the helicopter the AI consistently throws grenades on the roof and kills themselves. It makes that part of the game a pain in the ass because I'm basically waiting for the chopper to come around again so I can tag it with my JAW.