The art is delicate and beautiful, and the music is good.

The controls are quite unique and a little difficult for me.

But I managed to defeat the boss and clear it!

The art is nice, but the controls feels a bit weird, nice music by the way

Good submission - I don't see any obvious bugs from my play-through's.  Wasn't able to beat the Boss, but I see that other's have been able too, so that makes for a good mix of difficulty.  In a game like this, you don't want a boss that's either too easy or too hard, and I feel like you've done a good job at balancing it.  My only complaint is the lack of a way to exit the game gracefully. I had to alt-tab and close the game from the task-bar (on Linux at least).

The graphics were certainly good and it looked cool. However I was very frsutrated with the moving, since the acceleration and max speed of the character were weird and unintuitive, even changing at times (perhaps that is a bug). The parkour jumping platform part in scene 2 was frustrating as well since the platforms were close to each other and you can easily bump your head on theme, there was a part you can also get soft-locked, the frustration is amplified with the characters movements. The Boos was definitely cool though, though her attacking signals were a bit unclear and I had no realy way to fight her but to just stand on the platform and spam shooting at her, praying, since dodging was definitely out of the question.

I liked the graphics and the sound quality a lot! Shooting the enemies had a nice feel to it. I wasn't able to kill the boss because I didn't understand the healing mechanic until after fighting it, but overall I thought this was a pretty fun game.