I played a good amount last night. My first TR since TR2.
Environments are gorgeous indeed, with poor looking character models, including Lara. Framerate (on PS3) fluctuates between decent and slideshow depending on the load. Still very much playable though.
Individual animations aren't that bad, but animation transitions are some of the worse I've seen in recent memory. Control hints are terrible. I press a button, hint disappears, never to be seen again.
Platforming aids aren't great either and fighting the controls seems quite frequent, especially given how bad camera work is. However, it isn't that big of an issue since you can take your time during most platforming sections. They could definitely use some time to improve on animation and platforming code, and that's an understatement. Platforming mechanics on the other hand, is much more varied than that other game, and I approve.
Human combat is indeed terrible. It feels way worse than what I remember. Fortunately I haven't seen much more of it after the ship level. I think Lara would be even better of with hack and slash combat than what it is right now. Whatever the case, Lara should have been much better at melee.
Checkpoint and autosaving is almost perfect. Level design is indeed great most of the time, though what you are supposed to do sometimes feels unnatural. The presentation doesn't explain those well. Fortunately on-demand field assist,which I now prefer over the timed hints, remedies some part of the problem.
I don't really like exploration elements, but when you know what you're supposed to do or where you are supposed to go, platforming and puzzles becomes straightforward, yet still very much satisfying. In that sense, overall TR is much better at the things it does best, than that other game that we shall not speak of. Unfortunately it's terrible at the remaining stuff.
Also, I cannot shake of the feeling that often I'm spending too much time at the same spot, even though there is continues progress. It feels a little cheap.
Still, I'm very much enjoying it right now. It clearly deserves better sales.
On an unrelated note, some music underwater or inside ruins sounds exactly like Oblivion, which makes me crave for another TES game so badly.