Start the level with your highly customized pistol
go to the right of the entrance, wait the visitors to enter and a marine to exit the WH and go near to you, "human shield" him and put him down in a corner, take his clothes. enter the WH, go straight pass the door then enter the left room pick up the keycard and also steal the video tape near the window (...) take the path to the other side of the white house. Use your keycard to open the door and keep going, you'll wind up on the other wing. head to the vice-president target (main building?) he is in an office and will walk to the president and her annoying dog passing by a room where there is a box, quickly kill him and hide him in that box. there is a large garden near there (dont remember, sry) you will find a secret service guy left alone, "human shield" him and put him down in the recess between the exterior of an oval office and a keycard protected door, take his clothes and his keycard, go thru this door and Find the oval office and trigger a cut scene. Once it is over, pursuit him and -poison/knife whatever- kill him when he will reach the left end of the roof. go back to the WH entrance, take back your suit, escape.

I believe the priest has the key.. in the beginning you see him in the picture-in-picture arriving in it. You could always go back to where you started and escape with that boat, though.

i stucked the mine into cake, bring that to boss, detonated it and accidentaly i killed 2 gang members rest of them was pretty easy. i slipped into one's room when his chick was coming out and that one in boiler room i strangled by the furnance (but first i put guy who was tossing coal into sleep) they found the body of the guy in cabin but in this part doesn't matter i think rest of them i just killed normally and threw over the rail

as soon as you start run climb the stair, enter the door, enter the door between the two stairs, run straight forward all the doors, there will be a "steward" dressed in white on the right, "human shield" him and knock him down, quickly take his keycard and drag him to the keycard protected room next to him, take his clothes. exit the room take in front of you the stairs go left behind the stairs enter the door, enter the door at the right of the kitchen (let a guard to exit it), grab the "first class sailor" clothes, go to the kitchen take the cake (hide your pistol in the cake ?), exit the door left of the cake table, go on the left climb the stairs head to the guard that is guarding the door, let him search you, go forward put the cake on the table. From there there is a gang member watching TV and the captain will come to taste the cake, the gang member will soon exit by the door where there is a safe, follow him "human shield" him knock him down, go "human shield" the captain and knocking down him, put them body in the room with the safe, take the documents in the safe. in this room there is a door that exit to the exterior and a "first class sailor" making a routine, you can sneak behind him and throw the bodies over the rail (at the left in the corner otherwise their bodies may be found by passengers below) from there it will stay five gang members to take out, i let you figure how to take them out, there is two/three of them still on this deck and their are easy to take out by "human shield" them and knocking them down then throwing them overboard, one or two others that you can simply push overboard and a last one in the engine room that you can "human shield" knock him down then throw his body in the engine, take back your suit clothes, escape.

you don't need the waiter uniform, ask the barman it will give you aphrodisiac, put this aphrodisiac in the glass that the waiter left on this bar in his routine servicing your target.

you have to follow him and sneakly kill him and hide him in the artificial cascade, you way have to distract him a bit to left the girl go forward. The poison can be used to poison a sausage (kitchen) that will help you to get ride of the second target's dog (btw i don't know if it is really needed, lol) you can kill the second target by accident with a well placed bomb.

if you disguise in clown, the target wife/girlfriend will tease you, follow her then sedate her, take the microfilm and hide her in the tiny restroom near the sauna (where you will take the FBI suit...)

follow the guy with the suitcase, "human shield" him and knock him down when he pee or when you are alone (between buildings) take his clothes and belongings and hide his body in a box, go to the "jesus saves" building, go in the backyard, wait for a waiter of the bar to go put the trash in the box, "human shield" him and knock him down, take his clothes hide the body in the box, enter the bar by the rear door, pass the kitchen, climb the stairs, wait the couple to go, keyhole the door and open it when the target go from the window to the wall and his hidden by the wall, sneak behind him, "human shield" him and knock him down, drag his body and throw it over in the previous stairs, take his talkie-walkie, go back to take the "messenger" clothes and suitcase, get ride of the second target by putting a bomb climbing near the engine that hang the piano, detonate when she go under, go to the building of the third target, go backyard and "human shield" the yellow duck guy near to the box and knock him down, take his clothes hide him in the box, left the suitcase there, go climb the stairs of the third target, kill him silently and put him in the room's box, go back take the suitcase and then your original suit, escape.