My Attempt on Loa Erebonius on Nightmare Difficulty in Trails of Cold Steel

I decided to go blind on this as it was a thought that I had about some time ago. Anyways this is the boss fight of Loa Erebonius in Nightmare mode. This really took a while as I expected in Nightmare difficulty lol.
Like I said this was the first time and went blind with my own strategy so sorry if it wasn't the way you expected