Yeah the controls and momentum aspects of the game is probably the largest hurdle. In exchange, the boost and slow system was done to make sure you keep the control as much as possible (the shift-space). I’m surprised level 2 (ascent - black hole introduction) was the main hurdle, as I thought level 3 (slingshot - proper positioning in black holes) would be where players would have difficulty. It’s a shame it was a bit too difficult, as it can be with the control-movement scheme.
Still, thank you for playing!