I was also hesitant to buy this game after first a distinct lack of reviews, and then rather mediocre scores (although most of those 7ish reviews did seem to like at least certain aspects of the game).
I'm four hours into the PC version now (somewhere in chapter 2) - playing solo - and I'm very glad I decided to take my chance with this game. So far it's been one hell of an entertaining dungeon crawl (with some stints under open sky) playing as E'lara. I can't recall ever having this much fun with bow and arrows in any action game or RPG before - and making it what may be the first case of (voluntary) cover based archery was a great decision.
The game also looks pretty great. Or let me clarify that by saying I was initially sorely underwhelmed, as the outdoors area in daylight during the prologue make the graphics look very dated, but once it's night time or in dungeons, it impresses a lot more. It also runs at a rock solid 60 fps at 1920x1200 on my aging Geforce GTX 260, which is a nice change of pace from a certain other fantasy game I'm playing at the moment (it involves a W and a 2 in the title

).
Voice acting is also solid, I particularly like the frequent banter between E'lara and Caddock (although I have noticed a few repeated lines so far, hopefully there will be enough variety throughout the game so the dialogue doesn't become tiresome).
As for all the people I've seen saying that Hunted doesn't play well on mouse and keyboard - I don't agree at all, and I'm saying that as someone who's around 50/50 PS3/PC player these days, so I'm just as used to a gamepad as I am to mouse and keyboard.
While it's true that particularly magic seems like it might make use of a few redundant key presses, I think mouse and keyboard are perfectly fine for this keyboard, and no less responsive or much more button heavy than most typical first person shooters.