Nice concept, I think a lot of people can relate to getting lost in your imagination as a child!
If you are wanting to take it further, a couple of things that could help the feel of the overall gameplay:
- Consider making the hit animation quite a bit faster and give the enemies a little kick-back when you hit them. This will let the player know they successfully hit the enemy and will prevent the enemy from just rolling over you regardless of whether they've been hit.
- Try adjusting the walking mechanic. The player seems to glide over the playing field. It feels a bit more like flying or sliding than walking. I little bounce in the walk animation might help this. It also looks like perhaps the walk animation should be a bit faster to match the speed of the movement.