The Music, I've got them in my Library too. Really Chilling and Relaxing Choice.
The Game itself looks polished and well designed.
Its definitely a MetroidVania but the Focus is heavy on Precocious Platforming.
From this Section on the Way is extremely Difficult and the Punishment if you die is Huge, maybe a Waypoint on half way would be awesome at this point. (Or an Option for Easy Mode with an Waypoint)
It also has the potential of "Rage Game" especial when the Wall Jump comes into Play. The Wall Jump feels not well implemented besides the other Mechanics which are really cool.
I love the work with your 2D Lightning.
The Game is amazing, good work, keep it up!