Ok there is a lot of jank. Ella keeps getting in the way, the player's movement and animations are desynced at times, and jump attacks reposition you after you land. The phoenix fight is also pretty damn hard and the decision to have jump on W and dash on SPACE and the ability on ENTER was... interesting...
BUT, I played through it all and got both endings (hint: don't abuse your power too much and waste Ella's lifeforce). And I can say that between the art, the music, voice acting, and story, I was deeply moved and captivated. Very cool stuff.