Thanks for playing!
That's a bit unfortunate, as the multiple layers where the last 4 levels, so you were at the end of the game.
As for the puzzles, there really are redundant puzzles. But that's because it was made for a game jam, where we made a puzzle game for (mostly) non-puzzle game players. Because of that we play-tested it a lot on non-puzzle gamers. After timing them on each level, it became clear that explaining a new mechanic once wasn't enough for them. So we had mutiple (redundant) levels to try and help that problem. Though, I'm no expert at it, so there probably could have been things to help the non-puzzle games players in a way that's not redundant to people who've had their fair share of lego gears :P
Thanks for the video anyways, it seems really interesting!