EGG!!
Not sure if you want to change your listed instructions, but for those reading the comments, I found the easiest control scheme was using my mouse (+WASD and space); left and right click to change worlds accordingly allowed my other hand to more elegantly handle the movement and jumps without worrying about holding down very many keys at once, and I highly recommend it.
The last jump was very difficult! After 3 or 4 attempts I decided to just clip inside the wall and jump on the insides of the wall... I understand this is unintended play but I actually found it a really enjoyable alternative at certain parts or where very thin jumps got too frustrating/nerve-wracking. Hehehe. I would like to play a game with that as part of the mechanics as well, though I understand that would probably be hell to design puzzles for!
All in all really stellar game regarding visuals, music, concept, and general polish; the one major bug ended up being one of my favourite features, so well done. (;