It's fast, it's bright, only on my second playthrough (overall less than 5 minutes) did I tweakered with the accessibility option. High contrast mode was more pleasant even though you lose some big details about the enemies. I also slower a little the speed and find it a bit more comfortable. I didn't tried all of what's available as I fail to see the point. This isn't a game for me, there ain't no goal, falling doesn't bring any penalty, and you can hit the enemies without so much of a scratch.
As the other comment noticed, the keybind doesn't appear to change but as I'm playing on azerty, it still somewhat changes ?
The game does look nice, the menus don't. And it's kind of annoying that the music loops whenever you clear a stage.
Hope to see this lil' goblin somewhere next.