Cheats, Codes & FAQs
On the level where you must gain access to the weather station, go to the side of the building to your right. Throw a grenade under the vent and the door will be blown off, allowing access. If you had gone in regularly, Williams would have turned into a Thing. Using this trick will save many medikits for the levels ahead
Skip first Boss battle
When you encounter the first Thing Boss, hold Up/Left to run diagonally and you should run under it before it can hit you. This will also aim you directly at the junction box. Immediately start fixing it. As soon as it is almost fixed, hold Right to run through the door. Since he will still keep fixing it as long as you do not release the button, with luck it will be fixed before the Boss attacks for the third time. At the intermission sequence you tend to take off in a random direction, so this may take a few attempts -- save immediately before trying this. If finished, you will lose only about half a bar of health and no ammunition, making the next area much easier.
How to beat the second big Thing
Go into to his garage. Fix the electrical panel that operates the hoist. Step back towards the middle of the big door. There is an opening between two of the crates. Using your grenade launcher in first person targeting, send in a grenade. If the Thing turns its head toward you, then you have him targeted. Continue sending in grenades until he begins to burn. You can send in a few more if desired for extra fun. Run into the Thing's room and on the far wall from the big door is a switch. Throw the switch and watch as the Thing
Always try to keep medics alive because medical packs can be few and far between. If you want your medic to heal a member of the team, tell your team to stay, then push your medic into the wounded team member. If he is hurt enough, the medic will heal him
Try not to give all your team members the same weapon because your ammo will go quickly. A good combination is you with a Shotgun or Machine gun, your second man with the one you are not using, then a Pistol. The rest depends on your ammunition supply.
Always use the Blowtorch while stepping backwards slowly, otherwise you will fry your feet.
When you begin the game, go back a couple of feet to find another MP5 (machine gun).
Get a doctor to follow you into a fight with the Thing
Use the following trick to get a doctor in the same room with you during your battle with the second giant Thing. Walk to the large garage door. Get the doctor close to the door as well. Then, tell him to not follow you anymore. Push him as close to the door as possible; and close enough to you that when you flip the switch to open the door he will not move. Before you flip the switch, tell him to follow you again. Flip the switch and when you are shown in the locked room with the second giant Thing, he should be beside you. Use him to heal you during the fight with the Thing.
In the level where you must find Faraday, do not hit the switches until you have met the medic downstairs. Bring him up to the top of the ramps and tell him to stay. Hit the switches and go to find Faraday. Leave, and on your way out, the medic will not have turned. You will get two medics for the remainder of the level.
Unlock Hidden trailer
Wait about one minute at the main menu to view a longer, uncut television trailer for the game.
How to persuade a person
If a persons trust is in the orange and they will not do anything for you, but if you go to first person mode and aim a gun at their head for three seconds, they will now do things for you without good trust.
Shut the door when you walk into a room, if you can. Things (walkers, etc) will come into the room if you don't
Blood Test Kits
Save your Blood Test Kits for showing your team that you are not infected to gain trust. Using them on a team member is useless because they get infected randomly, and usually break out within a minute of infection.