I have a problem: sometimes (very often) the music isn't in sync with the level...does anyone have the same problem? It's really annoying
maybe you could try moving the slope things a little bit farther away from the player, and then instead put solid-black spikes sticking out of them at random intervals, so the difficulty would be roughly the same but it'd look sorta more... idk, jagged?
I think it would look cool if you made a trail using the star deco for the ship to follow. Like how RobTop made a trail with the circle deco for the first ship in Electroman Adventures.
At the mini portal, I would also put a gravity switch portal, for some reason I have a feeling that that would help a lot. Just so that it's just not a normal gravity ship throughout the whole part. To me it starts to feel a bit boring.