The physics/player control was a bit weird, I kept getting stuck in the ground and it took a while to jump over the first enemy. It would have been more enjoyable to jump higher with every light collected instead of just staying in the air longer. The time taken to get into the air should be the same as the time getting back to the ground.
I loved the lighting and plant art, although the enemies and player could be more distinguished. (What were those things anyways?)
Nice job, happy coding!