Before passing by a motion detector, pick up the body of a dead or unconscious guard. Then, proceed to walk past the motion detector. The motion detector should not go off, due to it seeing the guard on your shoulders, thus making you invisible to it.
Capturing Suhadi Sadono
After killing off all of Sadono's guards, lure him into a dark corner then shoot him with a Ring Airfoil. Then, run up behind him and grab him. You can now force him to use the retinal scanner and complete the mission.
Defeating Norman Soth
After you have climbed up the elevator cables and have gotten on top of the other elevator, crawl through the hole in the wall. Norman Soth and two other mercenaries are on the top pathways. While in the hole, there will be one guard on the top path, slightly to the right. You should be able to shoot him in the head. Then, a timer will start and you will have one minute to kill Norman Soth and his other mercenary. When you shoot the first mercenary, drop out of the hole onto the first pathway. The second mercenary will go to exactly where the you shot the first mercenary. Shoot the second mercenary in the head. The second guard will be aiming at the hole, so he will not see you if you drop out of the hole. The last person to kill is Normon Soth. Start running down the pathway and turn left on the second to last walkway on the left. Look up and turn on your thermal vision. You will see Normon Soth. Get a clear shot and shoot him in the head. After that you must retrieve the smallpox box from the top pathway. If you are on the second to last pathway on the left, go up the ladder. There will be another ladder; use it to climb up. Drop off the ledge onto the pathway. Run down the middle pathway to find the smallpox box.
Easier Aiming With Pistol
To aim better with the pistol, press Square to pull it out. The crosshair should appear normal. Then, press Up on the D-pad and the crosshair should become a laser sight. This makes it very easy to aim, since the laser sight is smaller and thinner than the normal crosshair. This allows fast kills and head shots. If you are in dark corners and have the laser sight on, the enemies will notice and attack you.
Easier Aiming With Sc-20k
Press R3 to zoom in the sniper scope, then press L1 to hold your breath. You should be able to get a good shot while Sam remains still.
Find Mines Easily
In order to find mines in the camp mission, turn on the thermal vision.
Knocking Out Guards
To knock out a guard without using a Sticky Shocker or a Air Foil, shoot a Sticky Cam at their head. It must hit him directly in the head for the guard to get knocked out.
Level Select
When you complete the game under the normal or hard difficulty setting, when you go back into the game make sure you go over towards the level select instead of checkpoints. You could lose your data and have to do it over again if the wrong choice is made.
Multiplayer: Talking To Teammate After Losing
When you are playing in an online match and lose all of your respawn lives, mute your teammate and then unmute him. Both of you can now communicate with each other.
Prince Of Persia References
On the mission when you are on the train, look in the second car where the guard is located. Knock him out then go behind the fenced door. Look down you will see a magazine featuring Prince Of Persia.
Projectile Knock Out
During some missions you won't be able to kill anyone, and it may be hard to get close to people to knock them out. To knock them unconscious from afar, equip the SC-20K rifle and the Sticky Cam subweapon. If you hit an enemy in the head with the Sticky Cam they'll automatically drop unconscious. You can pick up used Sticky Cams and use them over and over again.
Shoot Without Fear
When you are at a point that you can only use non-lethal attacks, make sure that you have the SC-20K and at least one Sticky Cam. Instead of waiting to sneak up on a person, shoot them in the head with the Sticky-Cam. This knocks them out without using 'lethal methods'. Aiming high is the key to knocking the person out because the Sticky Cams have a short range. After the attack you can pick your cam up and use it again.
Stealth
To move quieter, crouch down and walk slower. This will make your steps softer, and keep you undetected to a limit.
Television Free: Drowning Your Victims
In Television Free (mission 8), you will have a chance to go down into the sewer. When you knock out a guard, drag their unconscious body into the water then click into thermal view. You can watch the life slowly slip out of their bodies.
Underground Radio
During the Kundang Camp level, you will eventually end up chasing Sadono underground. Your CO will advise you that they will no longer be able to communicate with you while you are underground, due to interference from copper.
However, if you get caught by a guard or an alarm is sounded, your CO will be able come over your earpiece saying that you need to watch the alarms. The female counterpart will also say something, even though they are not supposed to be able to reach you.
Various References
On the first half of the Jerusalem level, there is a book store directly behind an alley with a swinging lamp. Next to it is another smaller alley with a swinging lamp. If you look inside the large window you can see many different picture references to The Punisher, Ubi Soft's XIII, an anime, and a picture of the infamous 'Sniper Kitty' among many other things. Use the binoculars to get a much better look.
