I got to the end in just under 24 minutes. What a great concept, really cool, with so many new mechanics along the way. The levels were clever and you made soooo many of them :D
About gameplay feedback: restarting level is a bit clunky (since you have to go each time to the "guy" and change cards. I now that it's part of the narrative, but I'd rather it being a menu that I can open with an ESC or E or anything else really). Also - ladders were a bit annoying to use (as those are probably just multiple one way collision boxes :D)
But that's basically it, everything else I very much enjoyed.
Also-also, I like what you did with the theme of the jam. Many developers (including myself) went for a way looser interpretation, but it's very fitting here.