To have a person/monster facing direction moving, you need a sprite with 4 subimages for each direction. These are the ones loaded in your game you can use:
Go into your person object and change the sprite to person_nice
If you want, you can save time by copying the Change Sprite action you just added (and pasting it as shown in the arrow events).
Go into your <Down> Keyboard event and paste it (CTRL+V). Then drag it so it's the last action.
Add Start and End blocks around the Move and Change Sprite actions like this.
We don't have to change the subimage for the Change Sprite action as we want the person to be facing the front (subimage "0"), the same as when the room loads.
Go into the other keyboard events:
You don't have to change anything in your room. Just test it and you should see your person changing directions, not spinning...