This was an impressively deep puzzle game! I thought it was a bit simplistic during the first few levels, but you just upped the ante time after time! Really impressed with how much content there was and how much the later puzzles made me stop and think! Really impressive. And I love the mimicking mechanic, that's a really fun interpretation of the theme.
I do wish some things were more clearly explained, like what the red tiles do, and what situations kill you/the knights (like a blue spot that isn't filled in yet is a wall, so you can't walk into it, but when you're on it and it's unmade you die?). I really wasn't sure what the spikes were at first because for the first few levels that they existed, it was impossible to step on them, so it took me a while to figure out what they were. There was also a bug where the beam connecting me and the knights sometimes moved an extra space before snapping back to the right spot that (i think?) made level 10 impossible? I played mostly not full screened, which messed up all the text, but it was better when I maximized it.
Overall great, love the idea, love the puzzles, love the music, appreciate the level select menu. Great job!