That's it I think, really. The AI is kind of dumb. And I like the way new enemy types are introduced, but then they show up in places that don't really make sense. So far it feels much more like a straight action game, yes, but the narrative around it is also way smart.
The only comparable experience to this game that I can think of was the first time I played half life 1. HL1 had a more deliberate pace though.

