F.E.A.R.

You can easily tell that Norton Mapes is a bad guy because the fire alarm room will have a Cheesy Poofs bag in it. When you turn off the fire alarm, look to the right.

Check Norton Mapes' belt when you first encounter him. It reads "RTFM", which stands for "Read the f*cking manual", which is meant for non-computer literate people.

While making your way through the large office building, look for papers hung on the wall or scattered on desks. Many of these papers have "TPS Report" written on them, as well as a symbol including three boxes at the top. This is a reference to the popular movie Office Space in which the characters are involved with TPS reports at their office, Initech, which has almost the same logo as the symbol at the top of the papers.

While making your way through the large office building, about midway through the level there should be a large room filled with cubicles, with multiple offices on the side. One of the cubicles in the middle of the room has a lot of boxes piled into it, with a red stapler on the desk. This is in reference to the character Milton in Office Space. Management is always making Milton move his desk and using his area for storage, as well as stealing his red Swingline stapler. This can be found in the same area as the multiple TPS reports.

If you look around during two of the Alma visions, you will notice that it looks similar to the first level.

• Always have an assault rifle or sub machine gun with you. They are actually very good in most situations. Pistols are only good in paranormal attacks. Shotguns also work as well.
  

• The most important thing needed to complete the game is to master the shotgun. It will be the handiest and most used weapon thoughout the game. First, know that before combat enemies that are unaware of you will die in one shot. Once in combat, hide from them, preferably out of grenade range. This will cause them to hunt you down, which brings them out of cover and moves them close. Once they are exposed like that, the shotgun will usually kill them with one shot. The enemies that are smart enough to stay in cover can be killed or scared into the open by a grenade. Alternately, just advance closer to them every time they reload until you can kill them. Note: The shotgun is more effective at medium and longer ranges as compared to other games.
  

If there are no enemies or music playing, holster your weapon. You save ammunition and can move faster to get through quicker. This also helps you outrun paranormal activity or get through it faster.

Try to make a mark of some sort to lead you back to some Medkits that you could not carry before. If you so happen to run low or out of Medkits because of a big fight you can find them again. This is useful in Interval 11 with the armies of ghosts coming after you. Just make sure that you are able to backtrack to get the Medkits you left behind. Additionally, use your Medkits at the correct time. Do not use Medkits immediately when you have about 70 to 80 health remaining. Try using a Medkit when your health drops below 30. One Medkit can heal up to about 30 to 45 points. If your health happens to drop below 40 and you are in a 1v1 or 2v1 fight, do not bother using a Medkit unless you really need to. Just run to cover while using your slow-motion abilities. Your health will regenerate slowly back to 40 if it drops below that; however, your health does not regenerate during a battle.

After the firefight in the gas pipes area near the exit point of the map, there will be a gas pipe on fire. Turn the object off in the next room, then return to the now extinguished pipe area..There is a semi secret walkway there. Walk in, find the ladder, and climb up. You will find a health booster, and there is a door on your left. Go into that office. Listen to the song. It is the main theme from Shogo: Mobile Armor Division, an anime FPS created by Mololith. Look at the dry marker board. It is the same one from an office level in Shogo: Mobile Armor Division.

To avoid shellshock, always look around in a paranormal vision first before moving on. Also if Alma is in her child form, go towards her to move on. If she is in her older form, run away. It is also a good idea to shoot while running.

Enter F3ARDAY1 as a profile name to unlock all levels. Achievements are disabled when you use this name.