Maybe we can put all our questions, tips and hints for the various missions here...

I have a problem in the mission where you have to go kill the son of a japanese arms dealer... I enter his house and disguise myself as a cook, then in a small room there is a piece of poisonous fish and there are two dishes on the table... Now I tried putting the poisonous fish in one of the dishes, along with the transmitter(cause the body of the dead boss must be tracked)... The maid comes and get the food, I wait, i wait... And nothing happens Anyone know what I did wrong? I can't take on all the guards because there are just too much of them :/