The presentation in this game is on point!
I had a bug were when I tried to jump left, I couldn't use the light. I had to memorize the whole levels in the dark. (Maybe because of my keyboard since I was able to light up while jumping right.)
So the speed run levels were for me a pain in the neck (especially in the dark). Also, maybe you should have made the character less slippery. If you made this game in unity, it can easily be achieved if you decrease the "Horizontal" axis gravity in the input menu. If in construct 2 you can just decrease de deceleration.
Also I don't get it why we have to hold V to light up the lights and it doesn't light up automatically.
It would have been nice if you put the music on loop and not reset it after every game over.
Sorry if I sound too negative, I think your game is amazing and maybe the best one of the game jam. The jump felt good, the graphics were a really enjoyable to watch, good level design. And while the idea was basic, I think your execution was amazing!