Really nice feel and polished overall! The post processing effect really enhanced the visuals.
Loved the additional power-ups in this otherwise simple platformer! The jumps felt well thought out and gives a decent small challenge.
I don't know if I missed some indicators but some platforms cannot activate double jump. Also a small suggestion is to add something showing/demonstrating the power-ups because I had to reference the game page for which power up I am getting.
Great job!