Punch mode
Press R, L, Up, Down, A, Up(2x's) while playing.

Toggle gravity
Press R, L, Up, Down, A, L(2x's) while playing.

Silent Assassin ranks
You can still obtain a "Silent Assassin" rank on a mission if you are spotted. To obtain a "Silent Assassin" rank, there has to be nothing in the aggression bar. You can make sure of this by only using chloroform on guards and doing away with the target with just one shot.

Anathema: Easy Silent Assassin rank
At the start, wait for the guard at the side door of the gates to urinate then sneak in. Run straight to the cellar steps then sneak up to the kitchen. Then save the game at this point. Now check your map and wait for the Don to enter his bedroom. When he does, the guard outside his room should leave and go to another room. Swiftly get up there. You can take the Don out with the silenced 9mm. Aim for his head. Take his keys and jump off the balcony to the yard. Save the game again at this point. Hurry to the pool and wait until the coast is clear. Next, enter the side door to the house and run to the kitchen. Sneak down to the basement, making sure that the cook does not spot you. Go to the only room in the basement where 47 will say that Victorio is not here. From here, check your map and wait until the guard urinates once again. Then, run to the tool shed/car garage. Once there, retrieve the sniper rifle. Wait until he is done urinating and leaves to talk with his the guard at the kitchen steps. Run out the door and make for a clean get away through the front gates where you first saw the postman go in.

If you possess a sniper rifle that you can begin with, use it. If not, when you start all you really need is the anesthetic. From the hill you begin at, run down at a right diagonal. You should be next to a door with a guard inside. He will come out and start to urinate. When he does, use the whole bottle of anesthetic on him. Take his clothes and gun and walk inside the door. Next, walk over to the back garage door entrance. Go in and retrieve the sniper rifle. Walk back to the hill you started at. If you look in your scope, you will see the Don playing golf on his deck. Snipe him. Drop the rifle and run back to the door. Then, walk over to where the Don is at. Pick up the key and walk to the other side of the house, down into the cellar. Open the door, walk in the room, and walk back out. Walk out of the cellar and out the door you came in. If the coast is clear, run to the exit and you are finished.

You start this level with a 9mm Pistol SD, Fiber Wire, Anesthetic and the Ballers. When you begin, ignore the mail man and just proceed to the side door. Stand outside, but to the right of the door so the guard that comes out does not notice you.. When he goes out, he will urinate. Get under stealth and sneak up to him slowly and quietly. Then use the Anesthetic on him. Take his clothing and hand gun. Equip your 9mm SD and put it in your holster. Grab the body and drag it just inside the door, or the guard that walks outside will see it. You have to make sure that no one is alerted or killed besides the target throughout this level. Once you drop the body, walk casually all the way to the back of the yard (on the right side of the house). Avoid getting too near to the guards because they just might shoot you. As you get to the back of the yard, open your map and see where the Don and driver are at. If they are walking towards the back to urinate, run in swiftly, take a left as you walk in the door, and climb the ladder without getting noticed. As soon as you get on the roof, run to the office and enter the first door you come across. The Don will now go in the house and be on his way to the office. Pull out your silenced 9mm pistol. Walk to the other exit of the office, which is directly across from the door you went in. Open the door, go out slightly, and do a 180 turn so that you are facing the office. This is done so that there is less of a chance that the Don will see you when he walks in. Get a good shot and take him out with a single head shot. Once he walks in, he will not spot you and will walk to his desk. Aim for the head and shoot. Make sure that you shoot with the silenced 9mm pistol so you will not be noticed. Walk up to his body and pick up the revolver and room key. Drag the body to the door you came in. Put your hand gun in your holster. Save the game at this point. You must leave that room, but the guards will almost always see right through you. Walk through the left door (as if you were looking towards the front of the house) and walk casually. The guard just outside will be really cautious and the meter will be flashing red. Do not worry. Just keep walking and take a left. If he shoots, pause the game then load from your previous save and try it again. When you take that left, go through the door to your right. You will be able to pick up some ammunition in this room, but you will not really need it as you cannot shoot anyone to obtain the Silent Assassin rank. As soon as you go into that that room, there will be another door that will be on your left that leads to the kitchen. Check your map and make sure that no guard is here. If there is only a green circle in your map, it is the cook and she will not be alarmed. Run down the stairs swiftly, walk in the kitchen, and walk towards the basement stairs. From there, you can run to the door where your main objective is at. Once you open the door, you will find no one and walk out the other door (left of the door you just opened). Save the game at this point. Once you climb up those steps, you will be in the main yard once again. You have to leave through the door you came in. The guard should still be knocked out. There will be two guards in front of the house looking about. Try and walk closer to the wall to lower the chances of being spotted. Run as quickly as you can through the door and main exit and you will receive a Silent Assassin rank. If you get a message that the guards are alarmed, start over from your last save point. If they call you and are close and pursue you. they will see the knocked out guard which will alarm them and you will have to start from the last save point. If you take too much time, the mail man will deliver the flowers, the maid will go to the Don's office and notice that he is dead which will also fail the Silent Assassin rank.

Basement Killing: Easy Silent Assassin rank
You need to bring Anesthetic with you. Once you have started the level, go into the men's restroom. It is on the left side of the map. If you look closely on the sign by the door, it should read "Gentlemen". Once inside, wait in any stall besides the last one until the delivery boy comes in to urinate. While he is doing so, sneak up behind and use your Anesthetic. Take his clothes and drop all of your guns in a different stall. Keep your Fiber Wire. Then, proceed to the food court. Go to the window and wait for the delivery boy to give you a pizza. Once you have it, go to the elevator while staying as far away from the guards as possible. Once you are down there, go to the second basement and pick the lock. Once you are down there, watch out for chips on the floor. The man at the computer will hear them. After you get past the chips, strangle the man with the Fiber Wire. Then, head back upstairs and go back to the bathroom. Change your clothes and hide in the stall with your guns. You must hide because once you get back up, the delivery boy should be telling the guards about someone stealing his clothes. Wait for the police to stop coming into the bathroom. Once this happens, go into the place with your stash. Go into it and retrieve the Smoke Bomb. Then, go to the laundry room and drop the bomb into the chute. Next, go outside the fire department and wait until all the fireman have left. Because of the Smoke Bomb, the fire alarm should have gone off. When they are out, go in, change into the fireman outfit, and grab an ax. Then, run down the fire stairs and enter the office where the stairs are to get to your target. Once there, use the fire ax or the gun in the cabinet to destroy the computer. Once that is completed, go into the elevator.

Death of Hannelore: Easy Silent Assassin rank
When the level starts, immediately run to the brown boxes and wait for the guard to go up the little "hill". Then run towards the water and stay along it. Go into the sewer and look at your map. Then find the way up the stairs. When you get there, do not go up. There should be four walls that stick out. Find the one that is the darkest and pass through it. Then, go up the ladder and head right into the room. Go left and keep running to the next room. The doctors will run, but keep going. When you cannot go through any more doors, look on the bed and change into the clothes fast. Go out the way you came from swiftly and run. Some of the doors on your right have bathrooms. Locate the one that does not have one. Walk out calmly and go to the supply room. Get the door key then go to where the lady you are supposed to kill. When you arrive, there should be two people sitting down. Wait for the nurse to get up and talk to you. Follow her up the stairs and she will take you to the lady in the green. Wait for the nurse to leave and the lady in the green goes to the window. While she is still talking, go up behind her and cut her throat or strangle her. After she dies, drag her out the door and watch out for any patients or innocents. Go straight across the circle so the guards do not notice you. Go to the door on the right and put her inside. Then walk out calmly and go back the way you came from. When you get to the end of the sewer where you first went in, watch out for any guards that may be there. When it is clear, run to your motorboat, and still in your doctor's clothing.

Redemption at Gontranno: Beating Sergei
After you have killed all of the bodyguards, obtain a sniper rifle. Go into the confession booth and wait for the Sergei to come into sight. When he begins to come out, run across the church and hide behind the cross. When Sergei is in front of you on the second level, fire one shot to the head. Note: If you are in stealth mode when you open a door, no one will even hear you.

Obtain the two car bombs from behind the dumpster (and do not be spotted by the guard). Go into the sewers and proceed left. Go to the ladder that comes up under the limousine. You can tell which one is the proper one by comparing the sewer and street maps. Climb up the ladder. You will see the bottom of the car. Place a bomb. Then go back down the ladder and move to the far side of the sewer. Check your map for the manhole that exits behind the building by the Mafia man's limousine. Go up that ladder and wait for the limousine driver to urinate behind the building. When he does so, sneak up on him and use the anesthetic. Then take his uniform.Then save the game at this point. Walk up to the limousine and place the other bomb. If the guards start shooting at you, just reload from behind the building. Once the bomb is placed, walk back to the boat. Both men will try to leave and be blown up in their cars. You will not have alerted anyone or fired a one shot.

The anesthetic and custom rifle are suggested. Otherwise, you will be using the sniper rifle you will get at the pick up. When you start the level, wait for the limousine to go by you without getting seen. Check your map and make sure the guard is not heading towards the dumpsters where the weapon drop is at. Once the guard is walking the other way, run toward the dumpster and retrieve your weapons. If you do not have the custom rifle, get the sniper rifle that is assigned for the mission. As soon as you get all your weapons, run to the street and go down the manhole. Once in the sewers, run all the way to the manhole next to the one you climbed down. If you check your map, it is all the way to the left. Once you climb it, you be under the General's limousine. Set the car bomb and climb down. Open your map. You have to go to a second man hole from your left . When you go up, you should be close to the water tower. As soon as you are up on the streets again, run towards the building that is closer to the water tower. Stay on the side of the street, not the alleyway. Hide from the guard but make sure you can still see what he is doing. Save the game at this point. Once the guard is walking beside the water tower (away from the streets), run to the door, pick the lock, and run besides the water tower (on the side the guard is not on). Hide as close to the wall as you can near the corner, drop the sniper rifle, then take out your anesthetic and have it ready. Be ready to walk silently when the guard is close. The guard will pass right by you, walking toward the street. When he passes by you, start walking towards him. As soon as he stops, use your anesthetic on him. Take his clothes, run and get your sniper riffle then climb the water tower. As soon as you are ready to shoot, save the game. Aim towards the park and snipe the Mafia leader. He will be wearing a brown outfit. If the Mafia leader cannot be seen because the General is in the way, take the shot at the General. It will go through and you will take out two men down with a single shot. If you just shoot the Mafia leader, the General will run towards his limousine, which will explode with the car bomb you set earlier. Go down the tower and run towards the manhole you came out from. Climb down and run toward the first man hole you climbed down from. Then, run toward your boat.

Animals
When at your home area with the shed of guns, you may shoot down the birds either on the ground or while they fly in the air. Each bird that is shot will fall to its area and stay there until you leave the level. You can also shoot the pigs in their pen.

Pick locks quicker
Pick a lock, look at your map, and leave. The lock will be picked.

Stretched arms
Activate the "Nailgun mode" code and pin a person to the wall. Try to drag them and their arms will stretch like elastic.