Amazing single player First Person Shooter game.
I'll keep it short because if you reading this you actually care about getting the most out of your time and this game deserves your time:
Graphics :
Amazing graphics in PC, surprisingly good in Xbox 360 / PS3. Attention to very small details give the graphics an easy job to make you think the game and its context could be as real as any day in your life given the same events take place in it. My only complain in this, reloading animations are lighting fast but the hardest difficulty makes you properly understand why.
Sound :
Another top of the line when it comes to a videogame trying to make you feel within the world it recreates for your enjoyment. From explosions to men screamings. Some guns sound a bit plastic/toy but that dind't bother me.
Gameplay:
Although linear in its core, limited choices (only two situations where you are allowed to kill or let live) and paths that do not have any relevant impact in the ending/game, the game keeps its action packed/stealth moments and video moments in a good pace to keep you interested in wanting more.
Story:
0 spoilers here. A decent story well told throughout a videogame experience.
Final Thoughts:
Is it worth it for 50€/$ . No it is not. If I had the chance I would have waited until a Steam sale for 10 bucks. Not because it is bad but because the game is good enough to just 1 playthrough and then sits on your shelf/steam library for years.