Avoiding the turret things is the most annoying, but its just a case of staying hidden. That can get tricky when you've got moving boxes, and sentry guards to consider but as people here are saying -- once you've done it, you're outta the woods. I actually liked the change of pace to be honest.
Besides,
the boss is pretty good. And watching payge get taken away in his newly packaged state sets up the next part of the game well too.