This was pretty solid. The charge to jump idea was interesting and same with getting energy from the sunlight. I kind of wish there was something else you could do with the energy, or maybe that it also cost some energy to jump, or something like that. It was also hard to tell how the charging worked, I actually thought I had to be actively in the sunlight to attack.
It would have been nice for there to have been a particle effect or sound effect that made it a little more clear you were collecting energy. I figured it out eventually, though.
Nice job!