Wow, what an incredible submission! The depth of mechanics and number and quality of levels is amazing for a game jam. I see you've already gotten some constructive criticism, so here are some nitpicks that others didn't mention.
I don't know if this would "give away" the puzzle, but it would be clearer if the platforms/lasers were color coordinated with the buttons that activated them. Also, a laser or something to kill you below the yellow button in the last level would make it clear that you weren't supposed to go down there - I got stuck there for a while before realizing I could restart.
Again, these are nitpicks - I had a blast playing this! Perfect for the theme, super fun game!