Bought this in the States a few weeks ago. The dependency on SIXAXIS motion-sensor controls will throw a fair few people, and will leave many frustrated. I got stuck once or twice on a couple of levels because the controller wouldn't respond exactly as required in split-second instances.
If you're going to grasp the spirit of the game you have to rationalise the fact that you are, er, flying dragons - huuuuuge cumbersome beasties which (if they existed) would be unable to rotate on a pinhead. Hence flying around can feel a little stilted if you've been spoon-fed on free-and-instantaneous 360-degree movement in other games.
The SIXAXIS is a great way for player control - it's just this game that does it a misjustice. Additionally, some of the combo attacks aren't as easy to execute as Sony the developers would like us to think. Example: the level where you bludgeon the two giant sea-serpents' eyes out feels like you are reliant on the console automatically doing it for you, not through your own handiwork (although it IS supposed to your effort).
Aesthetically speaking, the game's visuals are frequently exquisite. Both in-game and in cutscenes, the graphical texture can be that of velvet. It's kind of showcase stuff, although no doubt within a matter of months other (and overall better) games will be pushing the PS3 graphics engine to the limit in terms of the eye-popping visual delivery we really hoped the PS3 would bring us.
In a nutshell: Lair is visually compelling, unfortunately challenging from a manual not a skill-set perspective, but really rather tremendous fun if torching humans to death with an all-flying 20-tonne scaly flame-thrower dings your dong. Good soundtrack, too.