Hi!
I saw the demo where the fighters sword touch the ground very often and there is effects that show collision detection with the ground/floor/earth.
I understand you want to show that collison detection system, but two things:
* A fighter does not want his/her weapon to be blunt. Not even a magical weapon

Even if the sword is heavy, you do not put a sharp edge into the ground that often.
* Make the visual effect less fireworkery. It is to much and to often.
So in short: Kill your darlings. Raise the sword fighting animation 10-20 cm up from the flat ground. When it still hits, nerf the visual.
Maybe make the lightning effects from the swinging sword only 50 % visible while you change the effects

Great demo otherwise!