Very good platforming game with a difficulty spike. I really like that the double jump is limited and you have to kinda plan how you will approach the stage so you don't run out.
The boss needs a bit more work, specifically the "tracking of the player" is too accurate and doesn't leave a whole lot of space to escape so you attack him.
Excellent work as a standalone and regarding to the previous versions.
Keep up the good work and i'm excited to see the next updates!!!