This is singlehandedly the best hack I've played in recent memory.
Everything looks amazing, the setups flow well into each other and everything is well indicated.
The aesthetics are on point, I love every bit of it, especially how certain levels evolve over time and have their own story.
(like how Red Forest slowly burns away as you go on.)
My only real grudge is that the songs sound modern compered to everything else. Would be cool to 8bit-ify the songs to fit better but it's not a necessity.
My favorite has to be Yellow Canyon due to it's athletisity and a perfect use of wall-jumping and other sorts of jumping on enemies.
Orange Shore can get a bit dull at times due to how slow certain areas are but the aesthetics and setups alone make the experience worth it.
I highly recommend this hack to anyone who's searching for a good standard challenge hack with cute aesthetics and great music.
Good luck with the project!
Edit: Does the playable character have a name?