I give this game a 10/10 but with one caveat: it is not for everyone. Fortunately, if you are considering playing this game then you are probably part of the demographic this game was geared for- i.e. you are a fan of the movies, the characters or atmospheric, frightening games that suck you into their world.
If you fit the above, then this game has what you are looking for in spades. The only other game to so perfectly create a world and suck you in would be Riddick: Escape from Butcher Bay.
This game has descent graphics, but the PERFECT game design does an amazing job of hiding the engine's limitations and making everything seem very realistic. Of course it helps that all the iconography from the movies is present and the sounds were taken from the films (and used to amazing effect). There is fear and tension which is compounded by the difficulty and the randomizer which keeps enemies cropping up all over the place -though they do not always storm right at you but rather ambush you later on.
The feeling of the three characters is presented very well too. The marine's campaign and the marine's controls gives the player the feeling of constantly running for one's life while playing the predator makes one feel like a badass and playing the alien feels very strange and well.... alien.
Some people have complained that there is no story and the missions/objectives are obtuse. This is a GOOD thing. While it can be frustrating at times, it is in keeping with the atmosphere and the character's situation. Afterall if one really did have to fight their way to safety through an alien infestation, there wouldn't be a proper story would there? There wouldn't be cut-scenes or character development! There would be nothing but bullets, running, tension and blood --which is exactly what this game delivers.
