@Warrior just another remark that may help you : when you will decide how things must go in your animation, see if you are in a “States Machine” case or a “IK” case … IK is really very limited in my opinion and I think that Lubos is working hard on it as it’s not trivial to make it ! Thanks again @lubos 
See for actual questions here Armory ignoring the Pose Mode? and here The role of Animation/Action in moving bones