Good game, nice touch in change tile colors in areas with new abilities, for me its ok to make the jump part hard as it is, but i would try to make the difficult more progressive, the first jump is just one of the hardest, because you can hit with the head and just fall, its good to make a safe place for the first usage of new abilities, so the player can sacrifice a run to practice.
I recommend write the controls, as a brazilian and english not being my first language when the narrator said "press 'K' to dash" I just was "Press what? A key? What Key? Oh! Its 'K'!!!Where is the 'K' key?! Oh! Its there!But my Right hand is on the arrows! Oh damn! times up!" XD. I just change to "A" and "D" and beat it.