From the very good gunplay, really good difficulty, design, and world-building that make this game really unique, it mixes the style of Doom with exploration and puzzles like Thief. I can't recommend this enough if you like both of those styles of games.
I Always heard of this game being somewhat underrated, but, man what a amazing game with some of the best emergent gameplay and replayability i've seen in while, If you like complex games that let you play anyway you want i strongly recommend this game. Obs: If you like Deus ex, System shock 2 and 1, Bioshock it's a must play.
I finished the original and the remake and it´s so faithful to the original,such amazing game!!. The only reason i took one star was beacause the game crashed several time for me, the solution was to put the graphics on high and reinstal my gpu drivers.
The start really good and after you unlock some skills it gets even better,but, unfortunately its very repetitious, the ai is psych,the second half of the game is slog and lot bugs like: guard hearing muffeld kills,seeing you in the dark,being alert by a body tha you hid,etc, plaque this game making a very frustrating stealth game that you have to reload often.