Yeah, the demo was bad until you got out of the caves and the whole game has that stupid LEGS IN THE AIR thing that I hate. But it didn't bother me except for like maybe 2 sections in the entire game that I thought were too hard. Was a really smooth ride. It's a nice mix of COD, Halo, and Gears. CoD because the game is very linear and very designed/scripted (I think linearity is good, some people don't), while at the same time having actual dynamic fights (enemies move, dinos behave differently, etc) that aren't on the AI level or openness level of Halo but close, and the enemies are kinda bullet sponges for weaker weapons like Gears.
I LOVE a good B level title and Turok is definitely one of the better B level games of 2008. It's better than resistance 2 and has better graphics. and the multi is surprisingly fun (they outsources the multi maps to rockstar new england)