My own quick impressions:
- I played through the first scenario twice, and the second one once, using fairly obvious methods each time. It certainly felt like there was a good amount of content I hadn't touched on in my first run through, and I'm looking forward to going through the same scenarios tomorrow.
- I felt like events were a little too scripted as others have said, and there was too much signposting, but I'm somewhat hopeful that much of this was down to it being a tutorial. We'll see come launch...
- Gameplay-wise, it mostly felt like what I wanted, Blood Money 2 with a more elaborate disguise mechanic to keep you on your toes, and Absolution's challenge system. I didn't get into any shootouts, so some of the impressions here are a tad disappointing, even if Hitman has always had rubbish combat. Otherwise, it controlled and played well, with plenty of space and room to improvise, even in these constrained mini-missions.
-Very uneven performance. There framerate alternated between a relatively smooth if not perfect 60-ish, to sustained drops into the 30s and probably even lower in places. This was usually on crowded parts of the boat, but also in some other random parts of the first scenario. (2500k and 970, High settings with medium shadows, but I didn't tinker with them too much)