Dude, you basically made an entire Windows OS system (or just a really good illusion of one) within around 48hrs while still making a fully functional Sandbox game. Yeah, you could probably add moving platforms and enemies and all that stuff, but the finished product still had a lot of cool things like bricks and wood, coins that could only be picked up after all the other ones were, or having two different toggleable blocks and switches.
My first day spent on this Jam was spent entirely around racking my head around an overly ambitious story game that I ultimately gave up for something simpler. I bet dealing with those windows was frustrating (almost ironic with the Windows OS thing) but you at least didn't have to deal with that.
I don't know how much Pygame offers, but I'm still impressed with what you have made, honestly