edit: also you should have posted this in my mobility thread, since it is more related to it than to this mod.

The wierd way your actor's legs are moving isn't due to my script(my script doesn't affect the way legs are moving, just the velocity of the actor as a whole) but to bad walkpaths: it seems that you used robot walkpaths(except for standlimbpath), which is good if you want your actor to have very rigid looking movements, but it is hadly recommendable for a ninja. Also my script increases the speed of the actor, so you might want to speed up the walkpath as well so that it doesn't look like he is going quicker than he is walking/running.

Also since your actor is a bit taller than standard AHumans, you should increase a bit the value of the self.alta variable in the mobility script, a value of 26 seems to produce better results than the usual 20, but as I didn't test it extensively you might find a better value.

I hope this helps.
edit: also you should have posted this in my mobility thread, since it is more related to it than to this mod.

These ammunition look very lua-fancy but don't you think that's a little overpowered for a pistol ?