After the cut-scene finishes, run down the hill towards the wooden door in the wall. Once there, go to the right of the door and enter sneak mode. Prepare an Anaesthetic to pacify the guard that later comes out the door for a leak. Once anesthetized, drag him onto the villa grounds and take his clothes. Walk through the villa grounds to your right until you reach the door (on your left) at the end of the villa grounds. Look through the keyhole until the lawyer and another mafia member pass by. When they pass, enter the villa and go left, up the ladder and enter the door on the terrace on your right. Go to the right side of the cupboard and wait for Guillani. Note that a maid might sometimes enter. When he comes into the room, kill him and take the key to the basement. Another way to kill G