Great take on the theme! I've managed to complete the whole game and the extra levels around 130 deaths, I gotta say the last two difficult levels had me go into pro-gamer mode because I died a ton of times in there, kinda frustrating but it fits with the precision platformer going on here, if anything I feel some levels are easier than the level that precedes it, like level 6 is easier than level 5 in my opinion, and level 10 seems pretty easy comparing it to all the previous levels when it is the last level of the regular ones. And finally the jump feels quite floaty, but maybe that was part of the design idea, but besides that the controls feel really good.
Overall the game is really good, loved to played it.