Not a bad game.
The story is about the supposed last stronghold of humanity controlled by a military dictator. This stronghold is located deep below surface somewhere in Poland in 2034. The world has been devastated and phantomized after WW II because of the accidental trigger of the experimental "Entropy" bomb. Okaaaay, moving on. You play as Albert Tokaj, a humble and depressed shrink who has insomnia as well as a receding hairline. Whatever sleep he gets yields horrible deja-vu kind of dreams where he can't distinguish realty from the dream, kind of like in Inception.
Something unknown happens to this underground bunker and you are sent to investigate, that's right, a shrink is sent to investigate a potentially hazardous gas leak. As you play, the reasons for the madness become more apparent and it becomes easier to relate to the main protagonist because he constantly records his thoughts onto his PDA. You get some sort of an attachment, if it only wasn't for the bland, generic and insincere voice acting.
The game runs on Unreal Engine 3.0 I believe. The amount of details is decent enough, most textures look good except for fire (with the exploding barrels) and water. The lightening is good, the tessellation particles are also present. Graphically speaking, it is really not a bad looking game. By the way, don't let the blurry graphics of the first 10 minutes of the game fool you. There's an explanation for that. And don't go toning down your gamma setting either.
The sound is great in general. Every sound with the exception of bad voice human acting across 80% of characters is believable. The honing of the vents, the steam pipes, the sound of the clunky metal, strange voices in the distance.
You can carry two weapons (a two handed one and a one handed one) as well as a melee weapon of your choice. There are plenty of pipes, crowbars and fire axes scattered around. However, if you decide to use one two-handed weapon, spend all the ammo and then come back for the other two-handed weapon that you couldn't pick up, you will find that the other weapon is gone. That's right, don't leave your weapons lying on the floor, otherwise they will disappear (like in Singularity). I also found that the fire ax will be the most effective in killing the enemy. You may also perform a finishing move, which, depending on the melee weapon you are wielding, will either result in decapitation, bludgeoning, stomping and so on.
The successfully crafted ambience and the complete lack of hud makes for great immersion. However, there is no waypoint help like in Dead Space or Red Faction: Armageddon. It's not like there are several areas to explore, but you may lose your sense of direction on several occasions.
There is a stamina system. Every time you swing, roll over or run, your stamina will decrease. What's funny is that your stamina gets almost completely depleted once you fight with your firsts and NOT when you swing a fire ax. You can block, evade attacks and do heavy and light melee attacks.
Running is really well made I must point out. Running feels like you are actually running for your life. The camera gets shaky, the point of view gets focused, the protagonist starts breathing heavily - it's all done well.
The controls are smooth enough when you don't melee. However, once you start swinging around, you will notice a slight awkwardness when it comes to the hit detection as well as the unrealistic damage. The shooting is okaish too. I don't like the way cross-hair looks though. Plus when you aim and try to move, your cross-hair is going to start having a seizure, i.e. it will wobble left and right. The game explains that fearlock is what decreases your accuracy but increases your damage and reactions.
As I was playing, I kept thinking that this was a poor man's version of Dead Space. And on some level it is. The crazed, infected and mutated members of the underground society are out to get you and you must go and prevent disasters from happening as well as go and link up with your friends. It's been done before.
Overall, I didn't find the game to be that scary. I found the dream sequences, the agonizing voices and uncomfortably dark environments more sinister than rushing zombified staff members. The game has some moments, don't get me wrong. There are some quick time events, hacking of the doors and a couple of twists.
Anyways, its too bad that Steam hasn't purchased any digital copies of this game. As of now, you would have to go to GamersGate.
UPDATE. As of November 2012, the Game is now available on Steam.