So, about it:
It was my first time playing this game;
I was on normal difficulty, playing with unicorn, I was around level 50;
I used 2x Dark Rift and Art Sanguinis to fight against her, because Art Sanguinis recover my HP on every skill and Dark Rift send a couple attacks to limbo, which helped me to survive until the end of this boss;
It took me over 2 hours to defeat Nightmare Moon, that's why I was TENSE as f*** during it;
When turning red, her scythe deals 2x more damage so you NEED to escape no matter what...

You can download the game here: https://gamejolt.com/games/ponyvania/232954

That OC on the corner, and also the character I was playing, is my OC Midnight Spades. I did this artwork of him, you can see more of my artworks on: https://www.deviantart.com/calenita
~Calena

Join me and my friends on my Discord server: https://discord.gg/XSw45dV