Silent Assassin Walkthrough
A butcher lies in front of you. Take his clothes and drop all weapons except for the hook. Now outside of the truck, there is a button to close the back door. Press it and continue to the entrance of the party. You will be searched for weapons but you don't have any. Now enter the building and go forward. Pass the current hall and into the big room.
You should be in a large room. Look left and there should be stairs. Take them and go right. Check your map and you should see a enemy at the exclamation mark. Enter the room he is in but use the sneaking button when you open the door. Take out your hook and kill him from behind. A cutscene should play. After, pick up the arm on the floor and head downstairs to the big room you were in.
Now go left and there should be a door on the right. Go through, go forward until you get to the kitchen. It is on the left side. Go through the doors until you find it. Now a cutscene should play. Drop your hook, pick up the meat cleaver, and put it in the chicken. Exit the kitchen from the way you came. Now from here, go left, and forward into the party room. You should see a hallway in front of you. Go into it, then follow the path to the stairs. You will be searched for weapons. You should be clear so go right and you should know where Sturrock is.
He is the fat guy sitting on the bed. First, shut the curtain, wait for the ladies to leave, and the curtains should be down. Retrieve your cleaver, give Sturrock the meat, and kill him with the cleaver. Don't worry, the ladies won't notice. Exit the way you came, and go downstairs. Now go into the locker room, it is the room left of the kitchen. Check your map to find it. If a man is in there, wait for him to leave, the lady to be turned around, and stab him with the syringe. You can leave his body there, nobody comes there. If he is not there, wait and repeat above.
Now go to the party room. Find where a pipe is. It is an exclamation point in the party room. Check for the location of the lawyer. If he is in a room, go give him a pipe, and kill him with a cleaver. If he is in the bathroom, wait for him to get a room. Back in the locker room, take your clothes back, go to the kitchen, and go forward until you see trucks. Go to one of them and you're done.