This game has a lot going for it and shows that it has a lot of time put into it however i struggled with the basic combat mechanics pretty severely.
On some turns you would start the player would be in defend or end mode. It was unclear how to go back and forward selecting units and making them do the things you expect them to do.
Maybe if you had something to clearly more define which action phase your character is in before ending.
Example. If your character is in the move phase. maybe have a directional arrow or text tell you which phase you are in. After he moves, he should display whether he can attack or just end his phase. Then move onto the next unit and repeat each action needed.
You should not be able to move between units until all there actions are finished. This way you wont get lost on which unit still has an action to be completed or not. Also limit which unit is able to attack with a priority system forcing you to move one unit at a time. This will give the game a bit more strategic feeling while also helping you see which unit has finished its action.
This will give a better clarity of which phase that unit is in so when your pushing buttons you have a better idea of what's happening.