On the mission where you are on the docks of the waste management plane, Ryuichi will shoot at you. After you shoot him a couple times he will run away. Kill all his men but, instead of going down the stairs, jump over the boxes onto the next boat and keep going until you see a staircase. Go up the stairs and Ryuichi will be standing there with the hostage Akira. But he will not move neither will Akira. You can even shot them in the head and nothing will happen.
I have noticed that whenever you are sword fighting with an enemy that there is a pattern to which the way the swing there sword. Usually they start off with the hard swings (press C+move with the analog stick on the nunchuck to dodge these). Then after that they get into a pattern of 3 regular swings and then a hard swing. After that the pattern repeats.
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