The STALKER games are in general not very polished and a bit "janky", but if you like this style of gameplay, they are very unique and the best available. Very atmospheric, great gunplay, engrossing, not afraid to let you fail and work things out for yourself.
I adore this game. It is extremely faithful to the first Alien movie, it is very well designed, the AI (esp. that of the Alien) is very clever. The graphics are very good, with great lighting in particular (a realtime radiosity solution back in 2014?!) The maps, textures, and lighting are all very cinematic and make you feel like you're walking through an Alien movie. Gameplay is very fun and well tested - a minor piece of advice is to avoid hiding too much! Keep moving, consistently and deliberately, while moving slowly and hiding behind and underneath things! You'll learn when and where you can make more noise, and get a feeling for how agitated or stirred up the Alien is. It's no fun (and works against you) to hide in lockers too much, only do it when you absolutely have to! Would heartily recommend this game!
