Well done! I really enjoyed playing this game.
I usually have nitpicks with player movement in general. I've only played this game once but I was pleasantly surprised that I haven't found any. The mechanic was so easy to understand when I was clearing the puzzles.
The standout moments were the ones involving the machines. Their presence felt intimidating which complemented the music and the overall theme so well!
However I will drop a nitpick lol.
I think it's more fitting to have the magnet button on the right side of the keyboard like a 'k' or a 'L' or whatever. I had a hard time pressing the 'z' button while moving the character.
I encourage you to drop a part 2. I'd buy it!