That was fun! I like the puzzle-boss gameplay, and the lightning concept is a cool spin on the theme. I enjoyed dashing around getting things bolted from the sky. The monster designs are cute!
I got stuck on the swamp boss for a while — I kept trying to hit the orb using up + left and up + right, but it took me a while to figure out I could only hit the orb by aiming with up only. I died so many times that I eventually stopped dying when hit... somehow.
The music was fun! That said, the sound effects are a little loud compared to the music — the audio regularly peaked above 0.0 db.
All-in-all, good work!