Havent tested MP but SP works fine. I liked a lot having my ass kicked in the "hunt" mission, AI makes a real good job at pinning me down and moving to finish me soft cover is no longer cover lol.
Centipede:
I have seen the same behaviour testing a similar mission, but at the end the squads seem to get organized and start moving towards the town at slowly pace, using cover and going prone, wich makes them a more challenging opponent compared to vanilla "chaaaaaarge" behaviour. They just seem to not like coming too close before the enemy is decimated and prefer to stay at a longer range firefight.
PS
Also noticed that when they get organized and focused some men try to flank enemy positions, wich gave me a nice surprise the first time they did it to me 3 opfor came out a hill at my left side with no one having noticed them lol, was pretty funny.
Also tested a 10 digged in foxholes vs 30, with artillery on both sides. At some point I needed to get my men out of the holes and leg it, wich was a bit of a problem at first because they didnt want to get up (we were under HEAVY fire) but a stand up & safe behaviour made them run away fine. So althoug they are a bit difficult to move when pinned you can still move them so not much of a problem. I felt like Cap.Winters in the Carentan assault, yelling at them to move move move