Very cool and we built game. I feel like the difficulty is just about right for what kind of game it is. Some early tutorial or even more focused levels to teach specific mechanics would of course be welcome but I did eventually figure things out and finish the game. I especially liked the final technical learning twist at the very end.
The music worked really well with calmer music for most levels and more tense for the action levels. My only complaints are I had some trouble with keys not responding (probably just a webgl issue) and I wasn't as fond of the second to last level with the three moving panels. I thought the solution, or at least the one I found, was a little poor, relying too much on fast reaction and speed than technical skill.
Still, I really like the game, awesome job.