One of the best games PC gaming has to offer.
There are a few reasons why it's so enjoyable. The pacing is well done, there is a lot of action in the game without it feeling like a shooting galore. I feel the AI is often overrated, they certainly can pose a challenge but I've had times where they'd just run up to me and my shotgun in a suicidal manner. Apart from the action bits, there's also horror. You'll see visions of the main bad guy - Paxton Fettel - as well as a little girl and several others. Even after I've played the game a couple of times, these parts still scare me (or at least freak me out) which is exactly what they're supposed to do.
I only meet the bare minimum system requirements to play this, but that doesn't matter to me, I still like it. I suppose that means top-notch graphics aren't THAT important in a game like this, many other factors (the ones I told you about just now) make up for it.
As mentioned, the game is "only" 8 hours long. At the end, it all feels nicely wrapped up but I still wanted to play it on (so I started a new game pretty much immediately after). There's an expansion for it, Extraction Point, which might offer pretty much the same but I've only played the demo for it (which I didn't find all too interesting) so I don't know how well that plays.
In any case, if you meet the system requirements and you're fond of action, horror, storytelling, slow-motion, melee moves,... this is certainly a game you should get.